3Spin is a reflex-based arcade game designed with colorblind folks in mind.
You control a ring in the center of the screen, rotating to catch multicolored dots based on color.
For instance, you'd need to use the yellow section of the ring to collect yellow dots, the blue section to collect blue dots, etc.
It's a simple premise that reminds me a lot of Revolvengarde, a free PC game from 2013.
What makes 3Spin stand out are its colorblind options.
The game lets you choose between standard, protanopia, tritanopia, and monochromacy color schemes.
This is something a lot of games lack, even those where differentiating colors plays a large part.
You can download 3Spin by Dark Square Games for free on the App Store.
For a similar game on Android, check out SPINRUSH.