Does Anyone Know App that Easily Allows You to Write Music?

So, I just started playing the drum line this year. I‘ve always been a drummer, but this year I really soared in learning music. So I have been trying to write a drumline cadence myself. I asked for recommendations from one of my friends, and he showed me an app, but it’s really not working for me. It doesn’t allow you to write in triplets, or rimshots, and many other things. So now I’m back in the hunt for an app that allows you to write music, easily. I’ve been looking around on the App Store and haven’t been able to find much. Any and all suggestions from anyone are welcome. Thank you guys!