Does it works in background?

[Hayk985]

Does this app works in background? Because as you know android has many limitations related to background processes in recent times. And I think the only way I can make it work in background, I have to use foreground service. But that always shows notification. Is there any other way to make it work in background.
So here's the list what I need to do in background.

1. Listen sound and when user says any key-word, start to record.
2. Save the record in phone storage or send it to server.

Thank you.
Regards.