SortFlow: Color Sort Puzzle

Pour liquid from one test tube into another until every tube holds a single color. When a tube is sorted, a cork goes in.

SortFlow is a color sort puzzle set on a chemist's bench: real test tubes in a brass rack, twelve mineral pigments and the sound of glass. There is no timer and there are no lives, so you can think each pour through.

How it plays
• Tap a tube to lift it, then tap another to pour
• Pour onto the same color or into an empty tube
• Sort every tube to finish the level
• Fewer moves earn more stars

Hundreds of levels
Every level is generated and checked by a solver before you play it, so every board can be solved. From level 51, every fifth level is a mystery: the colors below the top stay hidden until they rise to the surface.

Help when you need it
A hint shows the best next move, worked out by the same solver. Undo a pour, add an empty tube, or skip a level.

Every day
A daily challenge with a streak to keep, and a free spin of the lucky wheel for coins and power-ups.

Worlds and collections
Six worlds, from Ocean to Volcano, open as you progress. Spend the coins you earn on tube styles and backgrounds.

Easy on the eyes
• Colors chosen to stay distinct, with an alchemical sign on every color in color-blind mode
• Light, dark and AMOLED black themes
• Plays offline
• Free with ads; one purchase removes them

Recent changes:
What's new in 1.3.4
• Witch's Brew (24 Oct to 2 Nov) happens on the bench after dark: a moonlit window, bats and glowing vials
• A new icon from the bench: a mixed tube beside a sorted, corked one in the brass rack
• Real test tubes in a brass rack: each colour settles into one body of liquid, and a cork goes in when a tube is sorted
• New glass and liquid sounds: every sorted tube rings one note higher