@erion Basic Android TalkBack seems to work but I can't judge how it is in practice. The app is developed using Flutter so I imagine it works about as well as other Flutter apps do. I also see a couple of places in the code that seems to tweak various labels for screenreaders.

The author @emersion would be able to confirm.

@zrzz @emersion Huge thanks for taking the time to check, based on this, it seems quite promising, at least the author is aware of screen reader users which is always a plus.

I can't test it as I don't have an Android-based device myself, but this is a good start.