Two hands.
One shape.
No slips.
Trace the same shape with both hands at once, or hand half the screen to a friend and race them. Rounds last seconds. Green means you nailed it; red means you didn't.
Drag along the shape — mouse or finger
Line width is the difficulty
Shape
Trace the grey band from the blue marker. Your line turns green inside the band and red outside it. Let go to score the round.
Two ways to play
The screen splits down the middle. Who gets each half is the only question.
Both modes use the same split, the same shape and the same tracing logic. All that changes is how many people are holding the phone.
Solo
One player, both halves, at the same time. Your left hand traces the left shape while your right hand traces the right one. Your good hand does not get to carry the bad one.
Head-to-Head
Lay the device flat and sit across from each other. The split never moves, but each half turns to face the player who owns it — a quarter-turn each way when you sit at the short ends, or the far half flipped over when you sit along the sides. Same shape, same clock, one winner.
Scoring
Covering the shape counts for nothing if the ink was mostly off the line.
Two separate measurements multiply together, which is why a frantic scribble across the guide earns you nothing at all.
Accuracy
How much of the shape you actually covered. Every point on the ideal path is checked for whether your line came near it.
Precision
How much of your own line stayed inside the band, measured by length rather than by time — so slowing down cannot dilute a stray.
The clock, both ways
Every shape has a par time, and it cuts both ways. Beat it and you earn up to 300 points on top, scaled by accuracy. Run past it and the same clock becomes a penalty, bleeding points away — which is why extra laps to patch up a bad trace cost more than the coverage they buy.
The library
Start with a circle. Work up to a clover.
Fifteen shapes, each tuned so a clean trace takes a few seconds. Difficulty comes from tighter curves, sharper reversals and asymmetry — never from a longer trace. Every one can be run at any of the three line widths, and the thinner the line, the more each point is worth. Pick any of them to load it above.
No account, no ads, no internet.
- TraceOff contains no networking code at all. There is no server to send anything to.
- No sign-in, no tracking, no advertising, no third-party SDKs.
- Your scores live in the app's own storage on your iPhone and nowhere else.
- Rated 4+. Every question on Apple's privacy questionnaire answers "None".