One stroke. Round as you can.
One stroke, scored the moment you lift. It is graded by the app’s own scoring code, so the number here is the number your phone would give you. You get three tries a day here. The app has no limit.
In the app
- Your best score, kept on your phone
- A score card of your circle to share or save
- Eight more games in the same notebook, with Brain Power and a day streak
Google Play · coming soon
Free. No ads, no in-app purchases, no account.
How it’s scored
From the app's own scoring code, as of September 2026.
First the scorer checks that you drew a circle at all. Then it measures the circle eight ways, from how the ends meet to how steady your hand was, and some mistakes cap the score.
A 100 needs all eight at their best at the same time, with nothing capped and nothing taken off.
Under the score, a note names the one thing that would help most, like “left 12° open, close the loop” or “flat at the top-left”.
Show full scoring
If the line turns less than 300 degrees, it isn't scored, and you're asked to go all the way round. A shape that reads as an oval can reach 95 at most. A rounded polygon stops at 20, a square or polygon at 10, and a rectangle, triangle or scribble at 5.
A circle is then measured eight ways:
| Measurement | What it checks | Weight |
|---|---|---|
| Closure | Whether the two ends meet | 22% |
| Fit | How close the line stays to the best-fitting circle | 20% |
| Radius | How evenly the line keeps its distance from the center | 18% |
| Coverage | How much of the full turn the line goes round | 12% |
| Smoothness | Sharp bends and wobble | 10% |
| Symmetry | Whether every side of the circle matches | 8% |
| Center steadiness | Whether the center drifts while you draw | 6% |
| Confidence | Hesitation, reversals and shaky motion | 4% |
Some mistakes cap the score however good the rest is:
- Ends that don't meet: capped, down to 20 when the gap is half the radius wide.
- Less than halfway round: capped at 25.
- A break in the line: capped at 35.
- Crossing your own line, jitter, pauses and sudden kinks: up to 18 points off.
Questions
- Can anyone get 100?
- Only with all eight measurements at their best at once, nothing capped and nothing taken off. What a 100 takes
- Why did it ask me to draw again?
- Your line turned less than 300 degrees, so it didn't count as a circle yet. Go all the way round.
- Is this the score the app would give?
- Yes. The round here runs the app's own scoring code.