Saketo is a mobile Monero wallet. It isn't based on any existing wallet and is written from scratch. It is written in Dart and uses the Flutter framework.
The first mobile Monero wallet that uses Rust to handle Monero transactions.
To build Saketo, you need to have Flutter installed. You can find instructions on how to install Flutter here.
You also need to build external libraries. To do this, you can run the following commands: 1 - Fetch submodules:
git submodule update --init --recursive
2 - Build the libraries:
cargo ndk -t arm64-v8a -t armeabi-v7a -o ./../android/app/src/main/jniLibs build --release
Then you can build or run the app in Android Studio.