Circles & Lines

Draw a circle or line with your finger. The app recognizes the shape and shows its accuracy.

Drawing, scoring and the latest 100 history entries are free. History includes date, time, diameter or length. Customize a circle guide, retained strokes, background brightness and warmth, and light, dark or automatic appearance. Optionally score lines against the nearer horizontal or vertical axis.

Premium is a one-time purchase. Turn recording on to see daily counts, best accuracy with size, median accuracy, and each day’s best circle and line in the calendar. Stacked line charts show counts, best and median accuracy, and diameter or length. Switch between day, week and month to follow your progress.

Drawings made while recording is off are not recorded. Manually deleting history also removes the corresponding daily record; automatic trimming beyond 100 entries keeps daily records. Dimensions use screen units. Your local price is shown before purchase.