I recently build a torrent streaming app on tauri (lemontv.xyz), it is just amazing framework, it is damn fast on every platform. The only issue is that accesing system api's a bit problematic especially on android side...I needed to get into JNI calls to run a background thread on android so that when the user puts the app on foreground, the app needs to do a bit more of buffering. I mean in general, Tauri is or could be one of the best options if you are writing rust backend and have cross platform requirements.