It's a complete rip off of the game I Love Hue which came out for ios and android in 2017. That said, thats a not a bad game to rip off and it does it competently. This one of the few games that I find works as a genuinely relaxing game. Honestly this is probably a little bit more relaxing since they don't do the global average like that game does.

Good difficulty curve and helps you understand your strengths and weaknesses when identifying colors by having a visible timer. It also helps you understand how colors look depending on surrounding hues and how they can change intensity depending on what colors they're next to. You can consider it a puzzle game that helps you train your color perception.

There's 400 different puzzles to solve so you'll be here for a while!