In today’s mobile-first landscape, Xamarin has become a go-to framework for businesses looking to build cross-platform applications with native performance. From startups to enterprises, companies across the U.S. are turning to Xamarin development agencies to speed up their go-to-market strategy while maintaining a unified codebase. Below, we highlight the top Xamarin app development agencies in the US that have earned a reputation for reliability, innovation, and technical excellence.
1. Coders.dev
Coders.dev is a top-tier Xamarin app development company known for its remote talent model and industry-specific expertise.Coders.dev accelerates business growth by connecting you with top-tier, pre-vetted Xamarin developers who deliver reliable cross-platform mobile apps for both Android and iOS.
Key Services:
- Custom Xamarin App Development
- Xamarin.Forms & Xamarin.Native Development
- Enterprise Mobility Solutions
- App Migration to Xamarin
- Maintenance & Support
Tech Stack:
Azure, SQLite. Xamarin, REST APIs, Visual Studio, Xamarin
Notable Projects:
Coders.dev has built high-performance Xamarin applications across industries like healthcare, logistics, and fintech, delivering enterprise-level solutions for features such as real-time tracking and encrypted communication.
Customer Reviews:
“Coders.dev exceeded our expectations with their Xamarin expertise. Our app was delivered on time and functions flawlessly across platforms.”
Ratings:
Clutch: 4.9/5
GoodFirms: 5.0/5
Contact Details & Headquarters
Website: www.coders.dev
Headquarters: London, England
Founded: 2003
Email: [email protected]
2. CISIN (Cyber Infrastructure Inc.)
With over two decades of expertise in mobile and enterprise solutions, CISIN provides end-to-end Xamarin development services. Their skilled Xamarin team combines innovative design with solid architecture to deliver fast, scalable, and native-like apps, leveraging the key advantages of Xamarin for mobile app development across multiple platforms.
Key Services:
- Xamarin Cross-Platform App Development
- Mobile Backend Integration
- Xamarin App Testing & QA
- Support and Version Upgrades
- App Store Deployment
Tech Stack:
Xamarin.Forms, Xamarin.Native, C#, .NET MAUI, Azure, MS SQL Server
Notable Projects:
CISIN has successfully developed mobile solutions for government portals, educational platforms, and internal enterprise tools.
Customer Reviews:
“The team at CISIN brought deep Xamarin knowledge and delivered a smooth, intuitive user experience.”
Ratings:
Clutch: 4.8/5
GoodFirms: 4.9/5
Contact Details & Headquarters
Website: www.cisin.com
Headquarters: San Jose, California, USA
Founded: 2003
Email: [email protected]
3. Developers.dev
Developers.dev is a well-regarded Xamarin development firm offering flexible engagement models and high-quality deliverables. Their developers are adept at building visually engaging apps while maintaining cross-platform consistency and performance.
Key Services:
- End-to-End Xamarin App Development
- UI/UX Design for Xamarin
- App Maintenance and Optimization
- Xamarin Migration Services
- API & Third-party Integration
Tech Stack:
Xamarin, .NET Core, C#, Firebase, Azure DevOps, Visual Studio, JSON
Notable Projects:
They’ve worked with clients in retail, fitness, and insurance, helping them reduce time-to-market with unified Xamarin codebases.
Customer Reviews:
“Highly responsive team with in-depth Xamarin experience. We were able to cut our app development time in half.”
Ratings:
Clutch: 4.7/5
GoodFirms: 4.8/5
Contact Details & Headquarters
Website: www.developers.dev
Headquarters: San Jose, CA, United States
Founded: 2005
Email: [email protected]
4. OpenXcell
OpenXcell blends innovation with technical excellence to deliver tailored Xamarin app development solutions for both startups and large enterprises. Using an agile approach, they ensure rapid feedback loops and scalable results, making it easier for businesses to hire the best Xamarin developers who align with their goals.
Key Services:
- Xamarin App Design & Development
- Custom App Features Integration
- Xamarin Testing Services
- App Modernization & Migration
- Post-launch Support
Tech Stack:
C#, Xamarin.Forms, Azure, REST APIs, GitHub, Jenkins
5. Zco Corporation
Zco Corporation is one of the oldest software development companies in the U.S., with a strong Xamarin team focused on enterprise and government projects. They are known for their methodical approach and security-first app designs.
Key Services:
- Xamarin Enterprise App Development
- Xamarin Integration with Legacy Systems
- Xamarin Consulting & Architecture
- Security-Focused App Deployment
Tech Stack:
Xamarin, Visual Studio, .NET, SQLite, RESTful APIs
6. Simpalm
Simpalm is a mobile-focused development agency offering custom Xamarin solutions with an emphasis on user experience. They help startups and small businesses turn concepts into market-ready applications with cross-platform efficiency.
Key Services:
- Custom Xamarin Mobile App Development
- Xamarin for Startups
- MVP App Development
- Ongoing App Enhancement Services
Tech Stack:
Xamarin, C#, Azure, MySQL, .NET Core
7. Blue Whale Apps
Blue Whale Apps combines strategic thinking with cutting-edge solutions to deliver impactful Xamarin app development. They specialize in digital transformation for healthcare, finance, and education sectors, building scalable mobile applications with secure backend integrations.
Key Services:
- Xamarin Digital Strategy & Consulting
- App UI/UX & Architecture Design
- Xamarin Cloud Integration
- App Lifecycle Management
Tech Stack:
Xamarin.Forms, Xamarin.Native, Microsoft Azure, Power BI, .NET
Conclusion
The right Xamarin development partner can be the key to unlocking your mobile potential. The firms listed above offer deep Xamarin expertise, transparent communication, and proven track records of successful app launches. Whether you’re a startup looking for an MVP or an enterprise needing complex integrations, these U.S.-based Xamarin agencies can deliver tailored solutions that drive results.
If you want scalability, speed, and cross-platform efficiency, Coders.dev, CISIN, and Developers.dev stand out as the most reliable and experienced Xamarin app development companies in the U.S. It’s not just about building an app; it’s about choosing the right partner to do it with.
