Find blockchain development companies that build secure, scalable solutions for real business use. Choose from vetted experts in smart contracts, dApps, and enterprise blockchain integration. 

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  • Most Trusted & Award Winning IT Firm

    IIH Global offers innovative web, software, and mobile app development services tailored to your needs. As a trusted UK-based agency, we deliver reliable, scalable, and client-focused solutions to transform ideas into powerful digital products that drive growth, efficiency, and success...

    Top Services:

    • AI Development
    • Web Design
    • Software Development
    • Web Development
    • eCommerce Development
    • Show more
    Location
    Rickmansworth, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    17 Projects Listed

    IIH Global Services

    • AI Development
    • Web Design
    • Software Development
    • Web Development
    • eCommerce Development
    • Mobile App Development
    • CRM Consulting
    • WordPress Website Design
    • Staff Augmentation
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • FLOORS TO WALLS
    • MORENA MORNA
    • CHARITY ACCELERATOR
    • MODELSINC
    • EMPR
    • MARIA ELLIOTT
    • SCAFFOLDINGHIRE
    • STYLE N SMILE
    • ARRON JAMES
    • BlackBurd
    Data sourced from the agency's DesignRush profile

    IIH Global Reviews & Testimonials

    • Marcus Payams
      Marcus Payams Owner at Nos Apps LLC
      5.0

      Mobile App Development Review from Marcus Payams

      Bhavin, Lincy, Aastha, and their team helped tremendously in developing the mobile app, integrating AI into the app, and assisting in gaining access to API plugins for Hotel + Flight listings. 100% recommend!

    • Michael Gonzales
      Michael Gonzales Founder at Yumy Brands LLC
      5.0

      Startup Review from Michael Gonzales

      We would not have been able to develop our fan platform without the incredible talent of IIH Global. The development team is the best in the industry.

    • Omar Atamny
      Omar Atamny CEO at Lule Technologies
      5.0

      Web Development Review from Omar Atamny

      Very professional and independent, I can rely on them to do the work without much supervision, they put their own thinking and effort to the process which makes my work and life much easier, I highly recommend IIH Global.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Fastest Mobile App Development Company in the US.

    Dive into Apptonic.io! We specialize in crafting tailored solutions for Android, iOS, Wearables, Cross-Platform projects, and even Game Development. Whether you're dreaming up the next big app or need a sleek solution for your business, Apptonic.io is here to turn your ideas into reality...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • Wearables
    • IoT
    • Show more
    Location
    Carolina Beach, North Carolina
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000

    Apptonic.io Services

    • Mobile App Development
    • Software Development
    • AI Development
    • Wearables
    • IoT
    • Software Testing
    • Blockchain
    • VR/AR
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Virtu Hub
    • Nomad's Nest
    • Fit Fusion
    • Mind Meld
    • Well Wave
    • Tail Tales
    • Event Sync
    • Learn Leap
    • Eco Trail
    Data sourced from the agency's DesignRush profile

    Apptonic.io Reviews & Testimonials

    • Eobard Shaun
      Eobard Shaun Review from Google
      5.0

      Eobard Shaun's Review Sourced from Google

      I worked with Apptonic to develop my app, and it was a positive experience overall. The team was friendly and easy to talk to, and they helped shape my idea into something better. There were a few delays, and I had to follow up a couple of times, but they always responded quickly and fixed any issues. In the end, the app turned out great and worked as I wanted. They did a good job, and I’d recommend them with a little patience for timelines.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Seathink is Your go-to Partner For Professional

    Our mission is simple to help businesses grow online with powerful websites, creative designs, and result-driven digital solutions...

    Top Services:

    • WordPress Website Design
    • Web Development
    • eCommerce Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Surat, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed

    Seathink Services

    • WordPress Website Design
    • Web Development
    • eCommerce Development
    • Web Design
    • UI/UX Design
    • Blockchain
    • Mobile App Development
    • Social Media Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Pcexim
    • Budget Maids
    • silvilus
    Data sourced from the agency's DesignRush profile

    Seathink Reviews & Testimonials

    • Shivam Nandaniya
      Shivam Nandaniya Review from Google
      5.0

      Shivam Nandaniya's Review Sourced from Google

      Seathink IT has developed a really useful and user-friendly application. The app runs smoothly, has a clean design, and makes tasks much easier. Great work by the team!

    • Manav Modi
      Manav Modi Review from Google
      5.0

      Manav Modi's Review Sourced from Google

      Working with SeaThink was a fantastic experience. Their communication was clear, and they kept me updated at every stage of the project. The website was delivered on time without compromising on quality. Truly a team you can trust!

    • divyraj_ahir___
      divyraj_ahir___ Review from Google
      5.0

      divyraj_ahir___'s Review Sourced from Google

      I had a wonderful experience with SeaThink. The quality of their work, attention to detail, and commitment to deadlines are commendable. The pricing was fair for the high-quality service they delivered.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Engineering the Digital Future With AI Precision

    Hastree Technologies helps startups and businesses build practical digital products with AI integration, mobile app development, and custom web development. We develop apps for iOS, Android, macOS, watchOS, tvOS, and the web, from MVPs to full-scale production systems. Our team focuses on clean engineering...

    Top Services:

    • Software Development
    • Mobile App Development
    • AI Development
    • Web Development
    • HR Outsourcing
    • Show more
    Location
    Noida, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    Under $1,000

    Hastree Technologies Pvt Ltd Services

    • Software Development
    • Mobile App Development
    • AI Development
    • Web Development
    • HR Outsourcing
    • SEO
    • UI/UX Design
    • VR/AR
    • IoT
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Red Swan Pizza
    • iDispatch
    • AI POS
    Data sourced from the agency's DesignRush profile

    Hastree Technologies Pvt Ltd Reviews & Testimonials

    • Harpreet Singh
      Harpreet Singh Review from Google
      5.0

      Harpreet Singh's Review Sourced from Google

      Great experience working with the team at Hastree. They have strong technical expertise and delivered a smooth, reliable product. I was especially impressed with how they incorporated AI-driven features that made the app smarter and more efficient. Communication was clear, timelines were managed well, and the overall quality exceeded expectations. Highly recommended!

    • Mumta Chambers
      Mumta Chambers Review from Google
      5.0

      Mumta Chambers's Review Sourced from Google

      Had a really good experience working with this team on our medical app. They paid close attention to security and made sure everything aligned with HIPAA compliance, which was critical for us. The team was easy to communicate with, quick to respond, and handled feedback well throughout the process. Their experience in healthcare projects really shows in the way they approach things. Solid execution and a smooth overall collaboration.

    • BHUMI SHARMA
      BHUMI SHARMA Review from Google
      5.0

      BHUMI SHARMA's Review Sourced from Google

      Hastree Technologies is a great company to work with. The team is supportive and the work environment is very supportive. It provides good opportunities to learn and grow professionally.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Go-To Partner for Website and Mobile App Development.

    OpenGenX Technologies is a trusted digital solutions provider offering custom software, mobile app, and web development. Leveraging modern technologies like React, Node.js, and cloud platforms, they deliver scalable, high-performance solutions. Known for their agile process, timely delivery, and flexible...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Staff Augmentation
    • Software Testing
    • Show more
    Location
    Madurai, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed

    Opengenx Technologies Services

    • Software Development
    • Web Development
    • Mobile App Development
    • Staff Augmentation
    • Software Testing
    • Digital Marketing
    • SEO
    • UI/UX Design
    • Social Media Marketing
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Brad J. Dunn
    • Kenneth M. Todd
    • Georgia R. Jeffery
    Data sourced from the agency's DesignRush profile

    Opengenx Technologies Reviews & Testimonials

    • SOFIYA DEVI
      SOFIYA DEVI Review from Google
      5.0

      SOFIYA DEVI's Review Sourced from Google

      Opengenx Web Development Company demonstrates strong expertise in delivering high-quality digital solutions. Their professionalism, attention to detail, and commitment to excellence are clearly reflected in their work. Additionally, their client management approach is highly commendable, with clear communication and a strong focus on understanding client needs. Overall, Opengenx stands out as a reliable and efficient company for web development services.

    • bharathi meena
      bharathi meena Review from Google
      5.0

      bharathi meena's Review Sourced from Google

      Working at OpenGenX has been a great experience. The work environment is friendly, supportive, and encourages collaboration across teams. One of the best parts of working here is the opportunity to build and develop our own products, which gives employees real ownership and valuable hands-on experience. The company actively works with modern technologies and encourages us to explore new tools, ideas, and better ways of building products. This creates a strong learning culture where we continue to grow both technically and professionally. It has been a rewarding place to gain practical experience, contribute meaningful work, and be part of innovative product development.

    • Selva Chitra
      Selva Chitra Review from Google
      5.0

      Selva Chitra's Review Sourced from Google

      Had a good experience working at OpenGenX. The team is supportive and the work environment is friendly. I got opportunities to learn new skills. Management is approachable. A good place to start a career

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

7 Frequently Asked Questions About Blockchain Development Companies

What services do blockchain development agencies offer?

Blockchain development agencies design, build, and support blockchain-based solutions that automate processes, improve transparency, and enable secure digital transactions. 

Common services include: 

  • Smart contract development and auditing: Writing self-executing code and reviewing it to prevent bugs, exploits, or costly failures  
  • dApp development: Building decentralized apps that run on blockchain networks instead of centralized servers  
  • Token development and NFT platforms: Creating digital tokens, cryptocurrencies, and marketplaces for trading assets  
  • Blockchain integration: Connecting blockchain with existing systems like web apps, enterprise software, or cloud platforms  
  • Private and enterprise blockchain solutions: Setting up custom networks for businesses that need control, privacy, and scalability  
  • Blockchain consulting: Advising on use cases, architecture, and whether blockchain is the right fit  
  • Wallet development: Building secure wallets for storing and managing digital assets  
  • Maintenance and support: Monitoring performance, fixing issues, and updating systems after launch 

What platforms do blockchain developers use?

Blockchain development firms use a mix of public networks, enterprise platforms, and developer tools to build, deploy, and manage blockchain solutions. They choose platforms based on speed, cost, scalability, and whether the project needs a public or private network. 

Key platforms and networks: 

  • Ethereum: The most widely used platform for smart contracts and decentralized applications  
  • Solana: Built for high speed and low fees, often used for scalable dApps and marketplaces  
  • Avalanche: A flexible platform that supports custom blockchain networks and fast transaction finality  
  • Hyperledger Fabric: Designed for private, permissioned systems used by enterprises  
  • Corda (R3): Common in finance and regulated industries where data privacy is critical  
  • IBM Blockchain: Enterprise-grade solution built on Hyperledger for secure business use cases  

Development tools and infrastructure that blockchain development agencies use: 

  • Node providers (e.g., Alchemy, Infura, QuickNode): Give developers access to blockchain networks without running their own nodes  
  • Smart contract tools (e.g., Remix IDE): Used to write, test, and deploy contract code  
  • Frameworks and CLIs (e.g., Ignite CLI): Help set up and manage blockchain projects faster 

How much do blockchain companies charge for their services?

Blockchain development companies typically charge from $40,000 to $300,000+ for a full solution, depending on complexity, features, and security requirements. 

Cost by project complexity 

The biggest cost driver is the solution's complexity, from basic smart contracts to full-scale platforms. 

  • Simple blockchain apps: $40,000 to $60,000 
    Basic features like simple smart contracts or payment functionality  
  • Mid-level applications: $60,000 to $150,000 
    dApps with user roles, integrations, and moderate decentralization  
  • Complex blockchain systems: $150,000 to $300,000+
    Enterprise platforms, advanced security, custom architecture 

Cost by solution type 

Different blockchain products have different price ranges based on functionality. 

  • dApps: $35,000 to $150,000  
  • NFT marketplaces: $55,000 to $125,000  
  • Crypto wallets: $125,000 to $200,000  
  • Crypto exchanges: $135,000 to $190,000  
  • DAO platforms: $10,000 to $30,000 

Cost breakdown across the project 

Your budget is split across multiple phases, not just development. 

  • Consulting and planning: 5%  
  • UI/UX design: 10%  
  • Core development: 45%  
  • Testing and QA: 25%  
  • Deployment and maintenance setup: 15% 

Final pricing depends on scope, security level, integrations, and whether you build on an existing blockchain or create a custom one. 

What are the ongoing costs of maintaining a blockchain solution?

Ongoing blockchain costs typically range from 15% to 25% of the initial development cost per year, depending on system complexity and usage.  

Key ongoing costs include: 

  • Maintenance and updates: Bug fixes, performance improvements, and feature upgrades  
  • Infrastructure: Node providers, cloud services, and storage as usage grows  
  • Security: Regular audits, monitoring, and protection against vulnerabilities  
  • Transaction fees: Ongoing network or gas fees for processing transactions  
  • Support and operations: Technical monitoring, DevOps, and user support  
  • Compliance: Legal, regulatory, and data protection requirements  

Costs increase as the system scales, handles more transactions, or requires higher security. 

How long does it take to build a blockchain solution?

The best blockchain development company typically needs 3 to 9+ months to build a blockchain solution, depending on complexity, features, and security requirements. 

Typical timeline by complexity: 

  • Simple solutions: 1 to 2 months 
    Basic wallets or simple smart contract apps  
  • Mid-level projects: 2 to 4 months 
    dApps with integrations and user functionality  
  • Complex systems: 4 to 9+ months 
    DeFi platforms, marketplaces, or enterprise solutions  

Blockchain development agencies build products in stages, and each is adding time: 

  • Planning and requirements: 1 to 2 weeks  
  • Architecture and design: 2 to 4 weeks  
  • Development: 1 to 6 months  
  • Testing and QA: 2 to 4 weeks  
  • Deployment: 1 to 2 weeks 

Factors that affect the timeline include scope and feature set, choice of blockchain platform, team experience, and whether you build from scratch or use existing tools.

What is the difference between public and private blockchains?

Public blockchains are open to anyone, while private blockchains are restricted to approved users and controlled by an organization. 

You can see the main differences in the following table: 

Feature Public blockchain Private blockchain
Access Anyone can join Permission required
Control Decentralized Controlled by one entity or group
Transparency Fully transparent Limited visibility
Speed Slower Faster
Cost Higher (transaction fees) Lower
Security High through decentralization High, but depends on governance
Use cases Crypto, DeFi, NFTs Enterprise systems, internal operations

How do blockchain development agencies ensure security?

Blockchain development firms ensure security by combining secure coding, testing, and continuous monitoring to prevent vulnerabilities and protect data and transactions. 

Key security practices include: 

  • Smart contract audits: Reviewing code to detect bugs, exploits, and logic flaws before deployment  
  • Secure development practices: Using proven frameworks, code standards, and peer reviews  
  • Encryption and key management: Protecting data with cryptography and secure storage of private keys  
  • Testing and simulation: Running stress tests and attack scenarios to identify weaknesses  
  • Access control: Limiting permissions and enforcing authentication for users and systems  
  • Ongoing monitoring: Tracking activity, detecting threats, and applying updates or patches quickly  

Security is built into every stage, not added after deployment. 

 

 

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