I found a WIP flutter/dart client for nostr. Dart is a great programming language to use since it allows a single code base that can be compilled into an app for Android, iOS, Windows, Linux and Mac.

Also the Thunder app, a Lemmy client is written in dart and is a well polished client for Lemmy.

Hope for people work on this nostr client than any other client since anyone can enjoy the features this client has to offer, regardless of their device.