[jarko27]

Wow. It's so cool to see such a project.

I even remember in 2019 finding an app that was using a popup after unlock to learn words of a foreign language, unfortunately, it closed and I cannot recall the name.

I would be happy to see the notes.

[tasn]

I think it could potentially be us too, though not sure. It was a very flexible product and we had a variety of use-cases. :)

We also had a lock screen app that you needed to play a tune on an instrument in order to unlock the screen. This too died because of Google maintenance burden (it had 500k downloads IIRC). Here's what I could find about that one: https://music-lock.en.softonic.com/android

[jarko27]

That app I mentioned also had iOS version as well. I don't know how they made it, because AFAIK any customisation to unlock/lock process weren't allowed on iOS from the very beginning.

But nevertheless. It's a bit disappointing that major operating systems are becoming more closed for developers to create such beautiful apps