Been using Clef Trainer Grid for a couple months now. It’s basically an app to help you practice reading and inputting music notes. Pretty solid if you’re into music theory and learning instruments.
Here’s what you do: there’s this grid where you can tap out notes, or plug in a keyboard, or even use the mic to play notes. It’s got support for all the different clefs and key signatures too. And there’s a special scrambled grid mode that’s supposed to help you learn the notes instead of just the app.
Look, if you’re trying to get better at reading sheet music, you’ll probably like this. It’s not perfect – the higher level upgrades take forever and the ads can get annoying. But overall it does the job and is worth checking out.