Xamarin: Mobile App Development

Aditi Dosi
2 min readSep 22, 2022
Xamarin is an open source app platform from Microsoft for building modern & performant iOS and Android apps with C# and .NET.

Xamarin extends .NET

Xamarin extends the .NET platform with tools and libraries specifically for building apps on iOS, Android, macOS, and more.

These are some things that Xamarin adds to the .NET platform:

  • Base framework for accessing native features
  • Extensible Markup Language, known as XAML, for building dynamic mobile apps using C#
  • Libraries for common patterns, such as Model View ViewModel(MVVM)
  • Platform specific libraries that includes access to APIs from Google, Apple, Facebook, and more to add rich capabilities
  • Editor extensions to provide syntax highlighting, code completion, designers, and other functionality specifically for developing mobile pages

Develop everything in C#

With Xamarin, your entire app is written using C#, from back end code, such as business logic and data access, to native API access.

Because Xamarin extends .NET, you can use the large ecosystem of packages and libraries available to all .NET developers. You can even author your own libraries that are shared between any applications written on the .NET platform.

Native performance

Apps built using Xamarin leverage platform-specific hardware acceleration and are compiled for native performance.

Perform a full ahead-of-time (AOT) compilation on apps to reduce startup time, increase memory sharing, and improve performance.

Open-source and free

Xamarin is part of the open-source .NET platform that has a strong community of contributors from more than 3,700 companies.

.NET is free, and that includes Xamarin. There are no fees or licensing costs, including for commercial use.

Develop for any platform from your favorite OS

Xamarin apps can be developed on Windows and macOS and run on iOS, Android, macOS, tvOS, watchOS, and more.

The Visual Studio family of products has tools for building .NET apps on any operating system. There are also command-line tools and extensions for many popular editors.

Native & Cross-platform Integrations

Apps built using Xamarin have access to the full spectrum of functionality exposed by the underlying platform and device, including platform-specific capabilities like ARKit, CoreML, Fingerprint, Bluetooth, NFC, and more!

Xamarin also integrates with thousands of third-party libraries including Google Play services, Facebook, Google APIs for iOS. You can even bring your favorite native iOS and Android libraries to Xamarin applications with “Binding” projects.

What is Xamarin.Forms?

If you’re building apps with Xamarin, you’ll soon come across Xamarin.Forms.

Xamarin.Forms is an open source cross-platform UI framework from Microsoft for building iOS, Android, and Windows apps with .NET from a single, shared codebase.