So just to clarify, my main devices are Apple, they're staying Apple, but I have an Android phone for work related reasons. I also have a Google One account and as I have that Google gave me €4 to spend on apps. I'm looking for an app recommendation. I'm not looking for the kind of app someone may use day to day (because that's going to be my Apple phone) but more maybe a sciencie or techie app that may benefit more from the fact it's running on Android.
I once heard of an old iPhone app that let you read radiation using the selfie camera by putting electrical tape over the lens. Surely someone did this with Android!? That would be awesome!
Or perhaps even if you develop an app yourself,


