Not sure if this will help:
"-While making jumps, press the on-screen prompt to unleash Sonic's homing attack to destroy the robotic fish blocking his path.
-When approaching a big jump, you'll see three jump pads with different icons, such as rings, a question mark and an image of Sky Sanctuary. Simply choose which you'd like. In some cases, you may need to swipe the screen while Sonic is in the air to receive a coin bonus."