Alibi keeps recording audio/video in the background and saves the last 30 minutes at your request. Everything is completely configurable. No internet connection required.
Get it on Google Play Get it on F-Droid Get it on GitHub
You can support Alibi in various ways:
Add a new feature or fix bugs.
Translate Alibi into your language using Crowdin, so that other people can use it more easily.
It might sound crazy, but if you would just donate $ 1, it would totally mean the world to me, since it's a really small amount and if everyone did that, I could focus on Alibi and my other open source projects. :)
You can donate via GitHub Sponsors or via crypto currencies.