The best alternatives to Check It! : Memory Challenge (iOS) are Color Match, Memorado, and Sensorize. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Check It! : Memory Challenge (iOS)?
Hurree— The smarter, simpler way to analyze your data
How good is your color perception? How good is your memory? The simple 10-round Color Match game presents you with a randomly selected color for three seconds, and then asks you to match that color as closely as possible. It's harder than you think hawk-eye!