With the convergence to .NET MAUI, Xamarin was slated to be sunsetted and is now an unsupported technology. Mobile apps that use Xamarin can remain on the App Store—but they can’t be updated. So companies are rewriting their mobile apps in MAUI from Xamarin to maintain compatibility.
A project like this requires experience in both Xamarin and .NET MAUI. While Microsoft provides an upgrade assistant, it’s not a replacement for an experienced developer—and it’s not great for older apps. Even the most basic Xamarin to MAUI rewrite requires additional component upgrades (e.g., chart controls) and cleanup.