A free program for Android, by Pixel Art Book Color By Number – Pop It 3D Games.

Water Sort Puzzle is a challenging yet relaxing puzzle game that exercises your brain and tests your color-matching skills. Here, your goal is to sort colored liquid in the tubes until all water with the same color is in the same tube. To do this, you need to pour water from one tube to another. However, this can only be done if they have the same color and the receiving tube has enough space.

There are lots of levels available in the game, so you can enjoy playing for hours. You can also choose from three modes of play: classic, timer, and hard.