Is there a way to launch an app automatically? Eg launch an app, when certain GPS coordinates are met, a WLAN connection established, a Bluetooth connected, at a certain time at day, etc.
Look for "android broadcast receiver" and "intents" (that can be caught by such receiver). That are limited by Google recent years very much (IMHO). To save battery against hackers and junior app developers.
Hallo
many thanks for the Tasker advice. That might actually do the job already and I will give this a try.
Super and I thanks you all very much.
Cheers
René