Flow Free

Flow Free has been around for a long time, but it still holds up as one of the most satisfying puzzle games on the App Store. Each level gives you a grid with colored dots; you draw lines to pair matching colors and fill the entire board without crossing lines.

The earliest boards are easy enough to complete in seconds, which is great for relaxing your brain, but you can also crank the difficulty up with larger grids and trickier layouts if you’re in the mood for a gentle challenge. 

There are thousands of levels available, plus daily puzzles and optional timed modes if you want them, although for a chill experience, sticking to the untimed modes is the way to go.