Monstanner 🐧
German Let’s Player and Streamer. Also GNU/Linux & OpenSource enthusiast. Break the Windows and Gates. 🐧
What device do you have? Do you have Android Vanilla / Android from the manufacturer, or do you have a Custom Rom? Sorry for the stupid question, but you only mentioned two keyboard apps. Have you tried other keyboard apps, for example Fossify Keyboard? Where did you get Lemmy from (Google Play, GitHub, F-Droid)?
First of all, the app is open source: https://github.com/mtotschnig/MyExpenses. In addition, the apps available in the official F-Droid repo are subject to regulations. And with the app there is no hint, with undesirable features. In addition, the app is also built again by the F-Droid team and if something is noticeable there, the building is interrupted.
I can recommend the app in my experience. I also purchased a license. It will connect to licencedb.myexpenses.mobi and validate the license. After that, you can block the app traffic with a DNS filter app (personalDNSfilter, RethinkDNS, etc.). At least that’s what I did.
If you still have concerns, you can contact the developers at Mastodon (@myexpenses@mastodon.social).
If Material You is implemented, could the current theme settings still be made available? At least if it’s too much effort to maintain it.