How Much Does It Cost To Build a Blockchain Application In 2026 ?

Blockchain app development cost

Blockchain technology is rapidly reshaping how businesses build secure, transparent, and scalable digital products. From fintech and supply chain to gaming and digital identity, startups and investors are actively exploring blockchain-powered applications to gain a competitive edge. However, before entering this space, one of the most important questions they have is — What is the real blockchain app development cost?

In 2026, the global blockchain market continues to grow at a strong pace, with industry reports estimating adoption increasing by over 60% among startups and emerging businesses. While the opportunity is massive, proper budgeting remains a critical factor that determines whether a project succeeds or struggles. Many early-stage founders underestimate development expenses, which often leads to delays, feature compromises, or scalability issues later. 

It’s all because of this hardening truth. Generally, blockchain application costs vary widely depending on business goals, feature complexity, blockchain platform, and security requirements. So, if you are a startup, entrepreneur, and investor who wants a clear understanding of the cost of building a blockchain app in 2026, then this blog is for you!

Discover the Real Cost to Build a Blockchain Application

Blockchain MVP Development — built smart, built scalable.

  • Clear Cost Breakdown : Know what impacts your blockchain development budget.
  • Tech Stack Choices : Public, private, hybrid — choose what fits your vision.
  • Smart Contracts & Security : Audit-ready, secure from day one.
  • Scalable Architecture : Built for growth, performance, and ROI.

Get a tailored cost estimate for your blockchain project — customized to your goals and industry.

Request a Free Consultation and find out how much it costs to build your blockchain solution the right way.

Why Is Budget Planning Important While Creating a Blockchain Application?

Every successful blockchain project starts with clear financial planning. If you define your budget early, you control your investment, avoid unnecessary expenses, and build your application with confidence. Many startups fail not because of poor ideas, but because they miscalculate development costs. Proper budgeting helps you:

  • Control development scope — Focus on essential features instead of overspending on non-critical additions.
  • Avoid unexpected expenses — Prepare for infrastructure, security, and integration costs in advance.
  • Prevent costly rework — Plan your architecture correctly and reduce future redevelopment expenses.
  • Manage cash flow efficiently — Plan your investment step-by-step instead of exhausting funds too early.
  • Reduce project risks — Make informed decisions on technology, team, and development approach.
  • Plan for scalability — Also, allocate budget for future upgrades instead of rebuilding from scratch.

When you understand why budgeting matters, the next step is learning how to plan your blockchain investment strategically. Let’s explore that next.

How To Strategically Plan Cost Of Investment For Blockchain App Development?

As a startup or entrepreneur, you can control blockchain app development costs when you plan your investment with the right strategy. Instead of estimating randomly, follow a structured approach that helps you avoid delays, technical hurdles, and budget overruns. 

Define Your Business Goal

Start by defining your business goal and identifying the core problem your blockchain application will solve. This step helps you avoid unnecessary features and keeps your investment focused.

Choose The Right Blockchain Early!

Each platform differs in development cost, scalability, and transaction fees. A wrong choice can create technical limitations and increase future expenses, so always align the blockchain with your business model and long-term vision.

Never Comprise On Quality To Reduce Cost

An experienced blockchain development partner builds secure architecture, writes reliable smart contracts, and prevents expensive failures later. On the other hand, an amateur often leads to security risks, performance issues, and costly rework.

Avoid Heavy Long-Term Investment

At the initial stage, prepare to launch a Beta or MVP version with essential features rather than high investment. This approach reduces upfront cost, speeds up market entry, validates your idea, and allows you to scale gradually with real user feedback.

Once you plan your investment wisely, the next step is understanding the key decisions that directly influence blockchain development cost.

What Determines the Cost of Building Blockchain Applications?

Key factors that directly influence blockchain app development cost. When you understand these factors, you can plan your budget more accurately and avoid unnecessary expenses.

Type of Blockchain Application

The type of blockchain application plays a major role in determining development cost. A simple wallet, token, or smart contract application requires less investment, while decentralised exchanges, NFT platforms, DeFi systems, or enterprise blockchain ecosystems demand higher resources, security, and infrastructure. Each application type involves different development hours, architecture complexity, and integration needs. 

When you clearly define your application category early, you avoid scope confusion and control your budget effectively. Startups often reduce initial investment by launching a focused application instead of building a large multi-feature ecosystem in the first phase.

App Complexity

Application complexity directly impacts development time, cost, and technical effort. 

A basic blockchain app with limited features costs significantly less than a feature-rich platform with automation, analytics, multi-layer security, and scalability support. Complex applications require advanced smart contracts, custom architecture, deeper testing, and performance optimisation, which increases development expenses. 

If you prioritise only core features during the initial stage, you can control cost and reduce risk. Many startups begin with a simplified version and gradually scale features after validating the product in the market, which prevents overspending and unnecessary technical complications.

Choice of Industry

The industry you target also affects the cost of creating your blockchain application. Blockchain apps built for fintech, healthcare, supply chain, or digital identity require strict security, compliance, and data protection measures, which increase overall investment. Some industries demand advanced auditing, regulatory alignment, and enterprise-grade infrastructure, which adds to development effort and timeline. 

On the other hand, gaming or community-based blockchain apps may require less compliance but focus more on scalability and user experience. When you align your development plan with industry-specific requirements early, you avoid unexpected regulatory costs and build a more reliable and scalable blockchain solution.

Methods of Development

Your development approach significantly influences the cost to build a Blockchain App. Custom development requires building everything from scratch, which increases time and investment but offers full flexibility and uniqueness. Whereas, ready-made frameworks or modular development reduce cost and speed up deployment, but may limit deep customisation. 

Many startups choose an MVP-first approach to minimise initial spending and validate their idea before scaling. Agile development also helps control budget by delivering the project in phases instead of one large investment. When you choose the right development method based on your business goal, you optimise both cost efficiency and long-term scalability.

Third-Party Tools Integration

Third-party integrations such as payment gateways, KYC/AML services, analytics tools, cloud hosting, and external APIs can increase blockchain development cost. While these tools enhance functionality and security, they often involve licensing, subscription, or usage fees. Poor planning of integrations may lead to higher recurring expenses over time. 

However, strategic integration of reliable third-party services reduces development effort and improves performance. When you evaluate which tools are essential and integrate only those in your app, then you maintain cost control. This will ensure smooth functionality, compliance, and user experience for your blockchain application. 

Tech Stack Integration

The technology stack you choose affects development complexity, scalability, and long-term maintenance cost. Blockchain platforms, programming languages, frameworks, and database architecture must align with your blockchain application goals. Advanced tech stacks may improve performance and security but require experienced developers and higher investment. Poor tech decisions often result in scalability limitations, performance issues, and expensive redevelopment. 

When you select a balanced and future-ready tech stack, you ensure smooth development and avoid unnecessary technical expenses later. A well-planned technology foundation helps you build a secure, scalable, and cost-efficient blockchain application.

Resource Team 

The size and expertise of your development team influence both timeline and budget. A larger team can complete the project faster but increases cost, while a smaller team may reduce expenses but extend development time. 

Skilled blockchain architects, smart contract developers, UI/UX designers, and security experts ensure high-quality output and prevent costly errors. Tight deadlines often require more resources, which raises investment. When you plan your timeline realistically and allocate the right team size, you balance cost, quality, and speed without compromising the stability of your blockchain application.

Choice of Geographical Location

The location of your blockchain development partner significantly affects pricing and quality. Companies in the USA and UK often charge higher development costs due to operational expenses, although businesses expect strong quality and security standards. However, many Asian development companies now deliver the same level of security, technical expertise, and reliability at more cost-efficient pricing. Choosing the right partner requires evaluating experience, portfolio, and technical capability rather than geography alone. 

In that sense, working with an experienced team like Coinsclone helps businesses achieve secure, scalable, and cost-effective blockchain development without overspending, making it a smart choice for startups and growing enterprises.

Thus, understanding these cost-driving factors helps you estimate your investment more accurately. Now, let’s look dive into…

How Much Does It Cost To Create A Blockchain?

Building a blockchain from the ground up demands a strong technical planning and financial commitment.

Usually, the cost to create a blockchain starts from $150,000 and may extend based on your business plan & network architecture you choose. 

Also, the overall budget depends on the type of blockchain network you choose — such as public, private, or hybrid blockchain.  When it comes to the development scope of blockchain, the choice you make on Layer 1 blockchain protocol or Layer 2 Scaling solution also impacts your investment options. Moreover, other modules like token economics, validator incentives, node distribution, governance models, may directly influence your development cost.

Beyond these core infrastructure, your budget will depend on Integrating blockchain into diverse applications or platforms. As a startup, you might be considering scaling your blockchain across applications like exchanges, DeFi platforms, enterprise ERP systems, payment gateways, and cross-chain bridges. This will definitely impact your investment plan. 

So, now, the real question is, should you build an entirely new blockchain network, or integrate with an existing ecosystem to accelerate time-to-market and reduce operational complexity? 

That totally depends on your business perspective. If you are preferring to integrate blockchain or creating an application on blockchain, the next practical step is to evaluate a more business-focused question…

How Much Does It Cost To Develop A Blockchain Application – Quick Estimate (2026)

The cost of developing a blockchain application depends on the development approach, feature level, and customisation. Below is a quick cost overview for popular blockchain applications in 2026.

Blockchain App Development Cost (Estimated Range)

  • White Label / MVP (Basic Features): $25,000 – $50,000
  • White Label / MVP (Customised Features): $50,000 – $100,000
  • Development From Scratch (Customised Build): $100,000 – $150,000

Estimation of Cost By Blockchain Application Type

Here is a clear cost breakdown for different blockchain applications based on development approach and feature level.

Cryptocurrency Exchange Development Cost

Crypto Exchanges are considered to be the primary business model in blockchain space. Several strategic and technical choices shape the total investment required to build a cryptocurrency exchange. The cost to create a crypto exchange mainly varies based on the chosen type of exchange (Centralized, Decentralized, or Hybrid), trading engine performance, and liquidity architecture. Add-on modules like staking, margin trading, launchpad, or copy trading further expand functionality and cost. Generally, the cost ranges like, 

  • Basic White label Crypto Exchange: $25K – $50K
  • Customized Crypto Exchange Using MVP : $50K – $100K
  • Enterprise-grade Cryptocurrency Exchange : $100K – $150K

This pricing varies based on security measures, advanced integrations such as liquidity APIs, automation tools, and institutional-grade infrastructure.

NFT Marketplace Development Cost

NFT Marketplace is just another business model that startups decide to start as a business idea. The overall cost to develop an NFT Marketplace varies based on platform functionality, blockchain selection, and the level of customization required. Other key drivers include, the type of NFT Marketplace based on various niches (like Art, Music, Sports, Digital collectibles etc), fractional ownership, asset integration that influences your cost. Advanced Integrations like NFT launchpad, storage options & compliance readiness will influence this cost range. So, the overall cost is… 

  1. Basic White-label NFT Marketplace : $25K – $50K
  2. Customized NFT Marketplace : $50K – $100K
  3. Fully-Tailored NFT Marketplace : $100K – $150K

The final cost depends on the marketplace performance, storage capacity, and level of customization you ask for your creators and users.

Decentralized Exchange (DEX) Development Cost

For Startups, DEX creates strong positioning in the blockchain space, by offering transparency, user control, and automated smart-contract execution. Thus, the cost of DEX platform depends on the DEX Model (AMM, Order book & hybrid) you prefer to go with, smart contract logic and liquidity structure. Also, adding exclusive models like liquidity pools, yield farming, staking, swapping and DAO definitely contribute to the DEX cost. Thus, the DEX platform cost varies from…

  • Basic White Label DEX / Using MVP : $25K – $50K
  • Branded DEX Platform with Custom MVP : $50K – $100K
  • Advanced DeFi-Driven DEX: $100K – $150K

The overall costs may differ based on smart contracts, liquidity depth and cross-chain capability with advanced features.

Crypto Wallet Development Cost

Developing a crypto wallet involves more than storing digital assets. This also affects the cost of creating a crypto wallet. The cost varies based on whether you launch it as a standalone application or as a wallet-as-a-service integrated into exchanges, payment gateway, or Web3 ecosystems. Also, the investment depends on wallet type (custodial / non-custodial), supported blockchains, and security layers such as multi-signature, encryption, and recovery mechanisms.

  • White Label Cryptocurrency Wallet (Basic Features): $25K – $50K
  • Crypto Wallet with customized Features : $50K – $100K
  • Enterprise-grade Cryptocurrency Wallet: $100K – $150K

The level of your investment will depend on the security, infrastructure and scalability for your crypto wallet users. 

Crypto Payment Gateway Development Cost

Like Wallet, Crypto Payment gateway also has more functionalities rather than transaction of cryptocurrencies. Many people may launch it as a standalone payment processor or integrate it into exchanges, wallets, or e-Commerce systems. This decision shapes infrastructure, compliance scope, and overall crypto payment gateway development cost.  Also, adding exclusive features to meet the enterprise standard further impacts the final budget. So, the cost ranges from.. 

  • White Label Crypto Payment Gateway (Basic Features): $25K – $50K
  • Crypto Payment Gateway (MVP with Customized Features) :  $50K – $100K
  • Crypto Payment gateway development from scratch : $100K – $150K

Here, the pricing range varies on transaction volume, merchant integrations and some automation features for your users.

Crypto Launchpad Development Cost

Usually, startups choose launchpads to raise capital quickly, validate market demand, and build early community traction. Thus, the cost to build a crypto launchpad depends on the fundraising model (ICO, IEO, STO, IDO etc), Token launches, Liquidity locking etc. Also, the launchpad should have strong enough security & support multiple projects simultaneously. So, the overall cost is defined as: 

  • White Label Token Sale Dashboard (basic features) : $25K to $50 K 
  • Token Sale Dashboard with Customization :  $50K to $100K 

Also, the price of a fully customized token sale dashboard will exceed above $100K, based on fundraising automation, investor security and multiple token launches.

Crypto Token Development Cost

Creating a crypto token is often the first step for startups entering the blockchain space. Here, the cost to create a crypto token depends on the purpose like, for fundraising, ecosystem utility, governance, rewards, or asset tokenization. A well-planned token also requires proper testing, documentation, and deployment strategy to ensure long-term scalability and trust. Thus, the cost range is: 

  • Crypto token Cost (standard): $10K – $15K

The overall cost depends on the token standard (ERC-20, BEP-20, etc.), blockchain selection, tokenomics structure, smart contract complexity, and compliance requirements.

These estimates give a general investment idea based on current market trends. The final cost depends on feature complexity, security level, integrations, scalability, and development scope.

But you will be confused about what or which level to choose? 

The difference is not just cost: it represents how far your platform can grow, how secure it remains, and how competitive it becomes in the market. 

As a startup or entrepreneur, you may plan to build a powerful brand or replicate a proven success model. But true market leaders are not built overnight. They are shaped through risks, strategic plots, technical evolution, and relentless execution over these years.

For Eg: When you aim to launch a crypto exchange like Binance, you may see its current dominance as the benchmark. What you don’t see is that its journey began as a startup through various uncertainty, operational risks, and constant decision-making. What stands today is the outcome of relentless execution, thousands of strategic moves, and continuous improvement at every stage of growth.

You don’t need to invest Million dollars to create a blockchain app or brand like binance, trustwallet, coinpayments or anything. You just need to start right away and launch an MVP platform with essential features. With that, you can enter the market early, validate your idea, and refine your product through real-world feedback. Thus, through continuous improvements, you can evolve into a credible, competitive, and trusted market brand.

Now that you understand the estimated cost range, let’s break down how your budget distributes across different stages of blockchain development.

Cost Breakdown By Development Stage Of Creating Blockchain App

Understanding how your budget spreads across each development stage helps you plan investment wisely and avoid overspending. Below is a clear breakdown from planning to launch.

Planning & Requirement Analysis

In this stage, you define your business goal, target users, feature scope, and blockchain architecture. The development team analyses technical feasibility, selects the right blockchain platform, and prepares a development roadmap. Proper planning prevents costly changes later and ensures smooth execution throughout the project. 

Cost Coverage: 10%

UI/UX Design

Blockchain designers create wireframes, user journeys, and interface layouts that make your blockchain application simple and user-friendly. A well-designed UI improves user experience, increases engagement, and supports product adoption. This stage focuses on clarity, accessibility, and performance-driven design & reduces future redesign costs and improves product usability from the beginning.

Cost Coverage: 15%

Core Development

The Blockchain developers build the main application, backend systems, and blockchain integration during this stage. They implement core features, transaction logic, APIs, and system architecture. This phase requires the highest development effort, technical expertise, and testing support. Strong development ensures performance, scalability, and system stability, making it the most resource-intensive stage of the project.

Cost Coverage: 40%

Smart Contract Development

In this stage, the team will write, test, and optimise smart contracts that automate transactions and business logic. Secure and efficient smart contracts prevent vulnerabilities, reduce manual processes, and ensure trust within the system. This stage includes contract optimisation, gas efficiency improvements, and functional testing. Reliable smart contracts form the backbone of every blockchain application.

Cost Coverage: 15%

Testing & Security Audit

In this stage, the developer team performs functional testing, performance checks, vulnerability scanning, and security audits to ensure the application runs safely and smoothly. This stage identifies bugs, fixes performance issues, and protects the system from attacks or failures. Strong testing reduces future maintenance costs and protects your platform from financial and reputational risks.

Cost Coverage: 10%

Deployment & Launch

In this stage, the team deploys the application to the blockchain network, configures servers, integrates final tools, and prepares the platform for public use. They ensure smooth system performance, stable infrastructure, and proper monitoring. A well-managed launch prevents downtime and ensures your application runs reliably from day one.

Cost Coverage: 5%

Maintenance & Upgrades

After launch, the team monitors performance, fixes issues, updates features, and improves security continuously. Regular maintenance ensures system stability, supports scalability, and adapts your application to market and user needs. This stage protects your long-term investment and keeps your blockchain application competitive and secure.

Cost Coverage: 5%

That’s it. Now that you understand how development cost distributes across stages, let’s explore how pricing varies across different blockchain platforms.

Cost To Develop Web 3.0 Applications Across Different  Blockchain Platforms

The Fintech market is enriched with diverse blockchain networks with latest upgrades and capabilities. So, the blockchain you choose directly affects development cost, scalability, transaction fees, and performance. Each blockchain offers unique strengths and suits specific business use cases. Also, selecting the right platform helps you avoid technical limitations and unexpected expenses.

Blockchain Platform Key Speciality Best Suited Applications
Ethereum Strong smart contract ecosystem, high security DeFi, DEX, NFT Platforms, DAOs
BNB Chain Low transaction fees, fast processing Crypto Exchanges, DeFi, Payment Apps
Polygon Scalable Layer-2 solution, low gas fees NFT Platforms, Gaming, DeFi Apps
Solana High-speed transactions, low latency High-performance DeFi, NFT, Trading Apps
Avalanche Fast finality, scalable architecture DeFi Platforms, Enterprise Apps
Hyperledger Fabric Permissioned blockchain, enterprise-focused Supply Chain, Banking, Business Networks
Tron High throughput, low fees Payment Systems, Content Platforms
Cardano Research-driven, energy efficient Smart Contracts, Identity Solutions
Polkadot Cross-chain interoperability Multi-chain DeFi, Cross-network Apps
Near Protocol Developer-friendly, scalable dApps, Gaming, NFT Platforms

Note: All major blockchain platforms costs will vary from $25,000 to $1,50,000 based on your applications use cases. The overall cost depends on your project scope, feature complexity, security requirements, integrations, and development strategy. 

Now that you understand platform-based cost differences, let’s examine the additional factors that can influence your total blockchain development investment.

Additional Costs That Influence Blockchain App Development Cost

As a startup, it is mandatory to know the additional or hidden cost behind developing your blockchain app. Beyond core development, several additional expenses can affect your total blockchain app development cost. When you plan these early, you avoid budget surprises and maintain financial control.

  • Infrastructure & Hosting — For cloud servers, nodes, and network resources to run your blockchain application smoothly.
  • Security Audits — Invest in smart contract and system audits to prevent vulnerabilities and protect user funds.
  • Third-Party Services — This includes costs for KYC/AML tools, payment gateways, APIs, analytics, and monitoring services.
  • Compliance & Legal — Have to allocate a budget for regulatory alignment, licensing, and legal consultation based on your region and industry.
  • Data Storage – The on-chain storage options will be too expensive for a startup to afford. Hence, choosing off-chain storage will help to sort out the huge cost in the app development process. 
  • Maintenance & Updates — Spending money on performance monitoring, bug fixes, feature upgrades, and long-term system stability.

When you understand these hidden costs, you can plan your budget more accurately and avoid unexpected financial pressure. Now, let’s explore…

How To Reduce Blockchain App Development Cost?

Startups can control blockchain app development costs by making smart decisions early. When you plan carefully, you reduce unnecessary expenses without affecting quality or performance.

  • Focus on Core Features First — Prioritise essential functionalities that solve your main business problem instead of building a full-feature blockchain at the start. This approach keeps development simple and budget-friendly.
  • Choose the Right Technology & Development Partner — Select a scalable blockchain platform and work with an experienced Blockchain development team to avoid technical mistakes, delays, and costly rework in later stages.
  • Plan for Scalable Architecture — Designing your App with future growth in mind so you can upgrade features without rebuilding the entire system, which saves long-term investment.
  • Start with an MVP for Faster — Starting with a MVP (Minimum Viable Product) with essential features to reduce initial investment, validate your idea in real market conditions, and improve based on user feedback. This approach helps startups launch faster, control risk, and scale confidently.

Now that you understand how MVP helps reduce cost, let’s compare Blockchain MVP vs Custom Enterprise Development to see which approach fits your business stage.

Blockchain MVP Vs Enterprise Blockchain App Development:  Comparison

This comparison is for startups who wish to create a blockchain app cost-effectively. Startups usually begin with an MVP to validate their idea, while enterprises invest in full-feature platforms for scalability and large-scale operations. 

Factor Blockchain MVP Enterprise Blockchain 
Development Cost Low to moderate investment High investment required
Time to Launch Faster deployment Longer development timeline
Feature Scope Core and essential features only Advanced, full-feature ecosystem
Business Risk Lower risk with gradual scaling Higher initial investment risk
Scalability Limited at early stage, expandable later Built for high scalability from start
Customisation Focused and minimal Extensive and fully customised
Best Suited For Startups, new ideas, market validation Enterprises, large-scale operations

Many businesses start with an MVP to reduce cost, test market demand, and refine their product before expanding into a full enterprise system. This step-by-step approach ensures smarter investment and controlled growth. 

So, for a startup like you, picking the MVP solution is the right development approach for creating a blockchain app. In that case, partnering with the right blockchain development partner can help you build a secure and cost-efficient application. 

That’s where Coinsclone comes in!!

Coinsclone – Your Strategic Blockchain Development Partner!

Coinsclone, as a leading Blockchain Development Company, extends its services in developing various blockchain-related applications and solutions. We work with startups as a technology partner, helping them move from concept to a market-ready blockchain product with clarity and confidence. 

Also, we help them in defining the right development approach, selecting suitable blockchain platforms, and structuring cost-efficient MVP launches that reduce risk and accelerate time-to-market. 

Instead of heavy upfront investment, we help startups launch strategically, validate ideas faster, and scale with real market traction. Also, Coinsclone enables entrepreneurs to build reliable blockchain solutions while maintaining full control over cost, quality, and long-term growth. 

So, Why Wait!!  Connect with our team to explore a practical roadmap and cost estimation for your blockchain application.

Discover the Real Cost to Build a Blockchain Application

Blockchain MVP Development — built smart, built scalable.

  • Clear Cost Breakdown : Know what impacts your blockchain development budget.
  • Tech Stack Choices : Public, private, hybrid — choose what fits your vision.
  • Smart Contracts & Security : Audit-ready, secure from day one.
  • Scalable Architecture : Built for growth, performance, and ROI.

Get a tailored cost estimate for your blockchain project — customized to your goals and industry.

Request a Free Consultation and find out how much it costs to build your blockchain solution the right way.

Frequently Asked Questions 

1. How much does blockchain app development cost?
Blockchain application development costs typically start at around $150,000 and can increase significantly based on the type of application, feature complexity, chosen blockchain platform, security standards, and overall development approach.

2. How long does it take to build a blockchain application?
The development timeline typically ranges from 8 to 16+ weeks. A simple MVP with essential features can launch faster, while complex blockchain platforms with advanced integrations, security layers, and custom architecture require more development time.

3. Can startups afford blockchain applications?
Yes. Startups can build blockchain applications cost-effectively by launching an MVP (Minimum Viable Product) first. This approach reduces initial investment, validates the business idea in real market conditions, and allows gradual scaling based on user demand and growth.

4. Which blockchain is best for business?
The best blockchain depends on your business goal and application type. Ethereum suits DeFi and smart contract platforms, BNB Chain and Polygon work well for cost-efficient scalable apps, while Hyperledger fits enterprise and private business networks.