Thanks for your hints. Basically I’m just a user who looking for a dictation app that is Open Source and is relatively easy to install on Android. It should work rather reliable (not many bugs) and the quality of STT should be acceptable and in my language (German). It should be possible to integrate the STT app into a keyboard.
I understand that LocalSTT, Sayboard or foundation.e.voice may be candidates for this.
It is recommended to try out foundation.e.voice
…there are no easy options currently, [only] prototype stage…
Android STT Dictation
LocalSTT - see Forum
Sayboard
foundation.e.voice (based on vosk) - Package signing required → Forum → more Info + (recommended)
GBoard from Google - available on Aurora Store. Can be used in combination with Shelter (a privacy app). It’s not very practical to often switch between Gboard and an Open Source Keyboard app. I.e. freeze and unfreeze Gboard app. Also, Gboard installed with Shelter can only be used with Shelter installed apps. See forum
Elivia - no APK available
Mycroft - no APK available. It’s a smart Assistant hardware box
Mozilla DeepSpeech - no APK available. It’s just a model for developers to be used
Vosk - no APK available .it’s a backend that doesn’t work on it’s own.
Smart Assistant
Dicio - Android (F-droid) APK available
Mycroft - hardware box
Genie - no Android APK available. Only for Linux