camelus is a nostr client written in flutter, it is in heavy development, feel free to test it but expect some issues and missing features.
You can download the apk from here, it is signed with my key so you will need to enable "install from unknown sources" in your phone settings.
Otherwise wait for the testlink to be available.
I don't have an iOS device so I can't test it, if you have an iOS device and want to test it, you can build it yourself, I will be happy to help you.
Otherwise wait for testflight to be available.