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.Â
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsIIH Global Services
Data sourced from the agency's DesignRush profileFLOORS TO WALLS MORENA MORNA CHARITY ACCELERATOR MODELSINC EMPR MARIA ELLIOTT SCAFFOLDINGHIRE STYLE N SMILE ARRON JAMES BlackBurd
IIH Global Reviews & Testimonials

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!

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.

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 ReviewsFastest 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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsApptonic.io Services
Data sourced from the agency's DesignRush profileVirtu Hub Nomad's Nest Fit Fusion Mind Meld Well Wave Tail Tales Event Sync Learn Leap Eco Trail
Apptonic.io Reviews & Testimonials
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 ReviewsImagination. Engineered.
ZyFolks is a full-stack software engineering company building AI-powered software, SaaS platforms, mobile apps, automation solutions, and blockchain products for ambitious businesses and startups...
Top Services:
- AI Development
- Blockchain
- DevOps Consulting
- Software Development
- Mobile App Development
- Show more
- Location
- Kozhikode, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZyfolks Technologies Services
Data sourced from the agency's DesignRush profileFortezzaPrime Vitacell EnglishChannel
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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSeathink Services
Data sourced from the agency's DesignRush profilePcexim Budget Maids silvilus
Seathink Reviews & Testimonials
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'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___'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 ReviewsEngineering 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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHastree Technologies Pvt Ltd Services
Data sourced from the agency's DesignRush profileRed Swan Pizza iDispatch AI POS
Hastree Technologies Pvt Ltd Reviews & Testimonials
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'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'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 ReviewsYour 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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOpengenx Technologies Services
Data sourced from the agency's DesignRush profileBrad J. Dunn Kenneth M. Todd Georgia R. Jeffery
Opengenx Technologies Reviews & Testimonials
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'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'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
Blockchain Specializations
Services Related to Blockchain
Popular Services
Why companies trust DesignRush
Every agency is independently vetted before it can be listed or ranked
Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.
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.Â
Common services include:Â
- Smart contract development and auditing: Writing self-executing code and reviewing it to prevent bugs, exploits, or costly failures Â
- dApp development: Building decentralized apps that run on blockchain networks instead of centralized servers Â
- Token development and NFT platforms: Creating digital tokens, cryptocurrencies, and marketplaces for trading assets Â
- Blockchain integration: Connecting blockchain with existing systems like web apps, enterprise software, or cloud platforms Â
- Private and enterprise blockchain solutions: Setting up custom networks for businesses that need control, privacy, and scalability Â
- Blockchain consulting: Advising on use cases, architecture, and whether blockchain is the right fit Â
- Wallet development: Building secure wallets for storing and managing digital assets Â
- Maintenance and support: Monitoring performance, fixing issues, and updating systems after launchÂ
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.Â
Key platforms and networks:Â
- Ethereum: The most widely used platform for smart contracts and decentralized applications Â
- Solana: Built for high speed and low fees, often used for scalable dApps and marketplaces Â
- Avalanche: A flexible platform that supports custom blockchain networks and fast transaction finality Â
- Hyperledger Fabric: Designed for private, permissioned systems used by enterprises Â
- Corda (R3): Common in finance and regulated industries where data privacy is critical Â
- IBM Blockchain: Enterprise-grade solution built on Hyperledger for secure business use cases Â
Development tools and infrastructure that blockchain development agencies use:Â
- Node providers (e.g., Alchemy, Infura, QuickNode): Give developers access to blockchain networks without running their own nodes Â
- Smart contract tools (e.g., Remix IDE): Used to write, test, and deploy contract code Â
- Frameworks and CLIs (e.g., Ignite CLI): Help set up and manage blockchain projects fasterÂ
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.Â
Cost by project complexityÂ
The biggest cost driver is the solution's complexity, from basic smart contracts to full-scale platforms.Â
- Simple blockchain apps: $40,000 to $60,000Â
Basic features like simple smart contracts or payment functionality  - Mid-level applications: $60,000 to $150,000Â
dApps with user roles, integrations, and moderate decentralization  - Complex blockchain systems: $150,000 to $300,000+
Enterprise platforms, advanced security, custom architectureÂ
Cost by solution typeÂ
Different blockchain products have different price ranges based on functionality.Â
- dApps: $35,000 to $150,000Â Â
- NFT marketplaces: $55,000 to $125,000Â Â
- Crypto wallets: $125,000 to $200,000Â Â
- Crypto exchanges: $135,000 to $190,000Â Â
- DAO platforms: $10,000 to $30,000Â
Cost breakdown across the projectÂ
Your budget is split across multiple phases, not just development.Â
- Consulting and planning: 5%Â Â
- UI/UX design: 10%Â Â
- Core development: 45%Â Â
- Testing and QA: 25%Â Â
- Deployment and maintenance setup: 15%Â
Final pricing depends on scope, security level, integrations, and whether you build on an existing blockchain or create a custom one.Â
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. Â
Key ongoing costs include:Â
- Maintenance and updates: Bug fixes, performance improvements, and feature upgrades Â
- Infrastructure: Node providers, cloud services, and storage as usage grows Â
- Security: Regular audits, monitoring, and protection against vulnerabilities Â
- Transaction fees: Ongoing network or gas fees for processing transactions Â
- Support and operations: Technical monitoring, DevOps, and user support Â
- Compliance: Legal, regulatory, and data protection requirements Â
Costs increase as the system scales, handles more transactions, or requires higher security.Â
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.Â
Typical timeline by complexity:Â
- Simple solutions: 1 to 2 monthsÂ
Basic wallets or simple smart contract apps  - Mid-level projects: 2 to 4 monthsÂ
dApps with integrations and user functionality  - Complex systems: 4 to 9+ monthsÂ
DeFi platforms, marketplaces, or enterprise solutions Â
Blockchain development agencies build products in stages, and each is adding time:Â
- Planning and requirements: 1 to 2 weeks Â
- Architecture and design: 2 to 4 weeks Â
- Development: 1 to 6 months Â
- Testing and QA: 2 to 4 weeks Â
- Deployment: 1 to 2 weeksÂ
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.Â
You can see the main differences in the following table:Â
| 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.Â
Key security practices include:Â
- Smart contract audits: Reviewing code to detect bugs, exploits, and logic flaws before deployment Â
- Secure development practices: Using proven frameworks, code standards, and peer reviews Â
- Encryption and key management: Protecting data with cryptography and secure storage of private keys Â
- Testing and simulation: Running stress tests and attack scenarios to identify weaknesses Â
- Access control: Limiting permissions and enforcing authentication for users and systems Â
- Ongoing monitoring: Tracking activity, detecting threats, and applying updates or patches quickly Â
Security is built into every stage, not added after deployment.Â
Â
Â








