What is Aniimo's max frame rate?

You can also set the cap to 30 or 45, or turn the limiter off entirely. That gives you four choices in the Frame Rate Cap option: 30, 45, 60, or no cap.

Mobile isn't locked to a lower ceiling. Aniimo Mobile on Android and iOS can run at 60 frames per second, the same top value the cap offers everywhere else. On a phone, the lower caps are what you pick when you'd rather trade smoothness for less heat and longer battery life.

If the game feels choppy even with the cap at 60, the cap is probably not the problem. The linked graphics settings guide covers the rest of the menu, plus fixes for black and red screens.

Not settled: It isn't settled whether turning the limiter off lets the game go past 60 FPS, or only removes the cap below that.