The Windows Calculator is now open source, and the folks at Uno Platform took the source code and put it onto Android.
Share this post:
Uno Platform Admin
Uno Platform enables for creation of single-source C# and XAML apps which run natively on iOS and Android, macOS and Web via WebAssembly. Uno Platform is Open Source (Apache 2.0) and available on GitHub. To learn more about Uno Platform, see how it works, or create a small sample app.