CalcWheel
Mental math puzzles, daily. For iPhone.
Download on the App StoreFree to start · iPhone · iOS 17 or later
Or try one level in your browser →
Trace a path. Hit the target.
A ring of numbers and operators, a target in the middle, and a path you drag to get there.
The total updates live under your finger. Let go when it lands on a target — easy to pick up, and surprisingly hard to put down.
One rule to know: your path counts left to right, like a pocket calculator.
(2 + 3) × 4 = 20
What you get
300 levels, six packs
From a gentle start to genuinely hard.
A puzzle every day
With a streak to keep going.
Five targets per wheel
Three to pass, five for a star.
Hints when you want them
One step at a time, as much as you need.
Dark and light
The whole app, either way.
No ads, no tracking
No timers either, and it works offline.
The first pack is free to play in full, along with the first few levels of every other pack.
Now available
Apple's launch clip for CalcWheel.