With “Mini C# Pro” you can write and compile C# code on your Android device.
It has the following features
– works off-line
– automatic code indentation
– syntax highlighting
– in case of an error, it gives most of the time clear debug-information
– various code examples
As all paid apps in the Play Store, there is a 15-minute window to try out the app for free. In these 15 minutes, you can cancel your purchase and reclaim your money.