Cross-platform app development with .NET MAUI (Xamarin)
One codebase, native everywhere
Build native iOS and Android apps from a single codebase, reducing development time and cost while maintaining native performance across platforms. Whether you're planning a new app, migrating from Xamarin, or looking for ongoing .NET MAUI development and support, we can help through a Fixed Price Project or Continuous Monthly Development.
What is .NET MAUI development?
.NET MAUI (Multi-platform App UI) is Microsoft's cross-platform framework for building mobile and desktop applications that look and perform like native apps. Built on the .NET platform, .NET MAUI extends proven development tools with libraries specifically designed for iOS, Android, macOS, and Windows app development.
With .NET MAUI, your project uses one shared codebase instead of maintaining separate code for iOS and Android. This cross-platform approach delivers:
- Faster time to market: Build once, deploy to multiple platforms
- Lower development costs: Significant cost reduction compared to building two native apps
- Shared business logic: Reuse code across mobile, desktop, and backend systems
- Native performance: Apps use native UI controls and are optimized for each platform's runtime
When cross-platform app development makes sense
.NET MAUI works for specific project types:
Enterprise mobile applications
Internal tools where your team needs consistent functionality across devices. Features like inventory management, field service applications, client portals, and employee dashboards benefit from shared codebase maintenance.
Data-driven mobile apps
Applications that display and process information: dashboards, reporting tools, CRM interfaces, logistics tracking, and business intelligence apps where the core value comes from data handling rather than platform-specific UI features.
Multi-platform business tools
When you need the same application running on tablets, phones, and desktop computers without maintaining separate development teams for each platform.
Existing .NET ecosystems
Organizations already invested in Microsoft technologies gain additional advantages. Your mobile app can share authentication, business logic, data models, and backend integrations with existing .NET web applications and services.
.NET MAUI support and Continuous Monthly Development
Send tasks whenever they arise. With Care, everything runs in writing at one fixed monthly price: no estimates to approve, no cost overruns.
Care Plus gives you everything in Care at its own fixed monthly price, plus up to two hours of meetings per month with a Project Manager or any 1902 Software expert (for planning, advice, and technical discussion), up to two ongoing tasks at a time, and up to two developers working on your tasks at the same time.
Care Ultimate is for ongoing engagements, often across multiple systems, that need close collaboration: a fixed price for every task or group of tasks, approved by you before work begins, people with the right expertise added to your project as your needs grow, and meetings with any 1902 Software expert whenever you need them (billed at the going project management rate for the actual time spent).
Typical work includes:
- Bug fixes
- New functionality
- OS version updates
- UI and UX improvements
- Performance optimization
- API integrations
- App Store and Google Play releases
- Ongoing technical support
Fixed Price Projects
For a single, well-defined app project (a new build, a major upgrade) you get one agreed price for the whole thing, fixed before work begins.
Typical projects include:
- New cross-platform applications
- Xamarin to .NET MAUI migrations
- Major app redesigns
- Backend integrations
- App modernization projects
Large projects typically start with a Project Scoping phase at an agreed, prepaid fixed price. The purpose is to precisely define what will be built and to establish the final price. This ensures full clarity for both you and us before development begins.
Taking over existing apps
Many of our clients originally worked with another software development company.
We regularly take over existing .NET MAUI and Xamarin applications, review the existing implementation and continue development with minimal disruption to your business.
.NET MAUI vs Xamarin: what changed
.NET MAUI is the evolution of Xamarin.Forms with significant improvements:
Single project structure
One project targets all platforms, replacing Xamarin's multi-project approach.
Better performance
Optimized rendering pipeline and improved access to native APIs.
Modernized development
Built on modern .NET with the latest C# features and tooling improvements.
Simplified maintenance
Platform-specific code organized in a clear folder structure.
Note: Microsoft ended Xamarin support in May 2024. Organizations with existing Xamarin apps should migrate to .NET MAUI to maintain security updates and access new features.
Advantages of .NET MAUI cross-platform development
One codebase for iOS, Android, Windows, and macOS means faster delivery, lower cost, and simultaneous updates across platforms. Native performance and native UI controls, not a web view. Full access to the .NET ecosystem, so your app shares code, authentication, and business logic with the backend systems you already run.
Code sharing beyond mobile platforms
Business logic, data models, and API clients written for your MAUI app can be reused in your .NET web applications and backend services, one investment, used everywhere .NET runs.
Our .NET MAUI development services
Mobile app architecture consulting
Not every project benefits from cross-platform development. We evaluate your requirements and recommend whether .NET MAUI, native development, or hybrid approaches best serve your goals.
Custom mobile app development
We build native iOS and Android applications using .NET MAUI for organizations needing custom mobile solutions, client-facing apps, internal business tools, or specialized mobile applications.
Xamarin to .NET MAUI migration
For organizations with existing Xamarin applications, we provide migration services to the .NET MAUI framework. We assess your current codebase, plan the migration path, update dependencies, refactor code as needed, and handle testing across platforms.
App store deployment
We handle the technical requirements of publishing apps to the Apple App Store and Google Play Store, including provisioning profiles, certificates, app signing, store listing optimization, and compliance requirements.
Ongoing maintenance and updates
Mobile applications require continuous updates for new OS versions, security patches, and feature enhancements, typically delivered through Continuous Monthly Development.
Development approach
Starting with business requirements
We begin with your business problem, not the technology stack. Our discovery process identifies what you need to accomplish, who will use the application, and what success looks like.
Proof of concept development
For complex projects, we build proof-of-concept prototypes to validate technical approaches, test critical functionality, and confirm .NET MAUI fits your requirements before full-scale development.
Integration with existing systems
Most mobile apps connect to existing infrastructure: databases, authentication systems, APIs, content management systems, or legacy business applications. We architect integrations that work reliably across platforms.
Quality assurance across platforms
We test on actual devices running different iOS and Android versions to identify platform-specific issues before app store submission.
AI-assisted tools are part of how our .NET MAUI developers, designers, and testers work every day. Every solution is still thoroughly reviewed, tested, and verified by experienced software developers and testers before delivery.
Technology stack we use
- .NET MAUI framework, core cross-platform framework for UI and application logic
- C# programming language, modern, type-safe language with extensive libraries
- Visual Studio, primary development environment with debugging and profiling tools
- Azure DevOps, CI/CD pipelines for automated building, testing, and deployment
- Platform-specific APIs, access to camera, GPS, notifications, biometric authentication, and native device features when needed
Ready to discuss your mobile app project?
Whether you’re planning a new iOS and Android application, migrating an existing Xamarin app to .NET MAUI, or looking for ongoing app development and support, we’d be happy to help.
Book a meeting and we’ll help you determine whether a Fixed Price Project, Continuous Monthly Development, or a combination of both is the right approach for your project.
Free, no-commitment
Commonly asked questions
Do you provide ongoing .NET MAUI app support?
Yes. Continuous Monthly Development is our primary service for ongoing app development and support. It allows you to continuously improve your app, OS updates, new features, store releases, without requesting a quotation for every individual task.
When does .NET MAUI beat React Native or native apps?
.NET MAUI works best for enterprise mobile applications, data-driven apps, multi-platform business tools (tablets, phones, desktops), and organizations already invested in Microsoft technologies. If your mobile app needs to share code with existing .NET backend systems, authentication, or business logic, .NET MAUI provides natural integration. React Native excels for consumer apps prioritizing UI/UX. Native development makes sense when you need the newest platform features or maximum performance. We recommend honestly which approach fits your project.
We have an existing Xamarin app, do we need to migrate to .NET MAUI?
Yes, eventually. Microsoft ended Xamarin support in May 2024. While existing Xamarin apps continue running, you won’t receive security updates, bug fixes, or access to new platform features. Organizations should plan migration to .NET MAUI to maintain support and compatibility with future iOS and Android versions. We assess your current codebase, plan the migration path, and handle the transition.
How much time and cost does .NET MAUI actually save?
Shared codebases typically achieve 70-90% code reuse depending on app complexity, translating to 30-50% faster development and proportional cost reduction compared to building separate iOS and Android apps. You maintain one codebase instead of two, which also reduces ongoing maintenance costs when mobile operating systems update. Exact savings depend on how much platform-specific functionality your app requires.
Does .NET MAUI deliver true native performance?
.NET MAUI renders native UI components and delivers performance comparable to platform-specific development. Apps use native controls, access device hardware directly, and are optimized for each platform’s runtime. Performance-critical sections can use platform-specific code when needed. The framework is designed for native performance, not emulation or web wrappers.
Can .NET MAUI apps use camera, GPS, and biometrics?
Yes. .NET MAUI provides access to camera, GPS, notifications, biometric authentication, sensors, local storage, and other native device features through platform-agnostic APIs. When features require platform-specific implementation, we write targeted code for iOS or Android while keeping most of the app’s business logic shared.
Do you provide updates and maintenance after launch?
Yes. Mobile applications require continuous updates for new OS versions, security patches, and feature enhancements. Through Continuous Monthly Development, we handle app store resubmissions when platforms update, implement new features as your business evolves, and maintain compatibility as iOS and Android release new versions.