Can you recommend me animation apps?

Hi! First of all, I can't speak English well. So, I appriciate for that if you understand my odd grammar...

I'm looking for animation apps in iOS. I've been using Procreate, but I'm not satisfied that.

Can you recommend me animation apps in iOS? I don't care whether it's paid or not.

Thank you for your helping. :)

(Also, I'm considering Procreate Dreams. How about this?)