This app was mentioned in 1 comment, with an average of 1.00 upvote
https://play.google.com/store/apps/details?id=com.ForgedTrinityGames.Arm
You can build really beautiful top notch games with the free version. It's pretty decent. But paying for it adds a lot of very helpful features. Especially the profiler.
I'm just using free atm but I'm hoping to pay for it soon mainly because of a game I'm working on now needs a few things that only the pro version has. I could still finish the game with free but I'd like it to be a bit more polished.