At start I thought it was like "color switch", but I guess not!
The game feels a bit repetitive, considering that is always all the same; except the speed of the circle, and it's pretty easy at start, because you can stop inside the circle!
Maybe changing the direction of the rotation or the shape of the circle would help!
All-in-all it's a great game and I love it can play it in mobile, there is almost no games that can be played in mobile in jams!