Off By One: Spot The One

New: Endless mode. 4×4 Hard, one mistake ends the run. Find the one shape that's slightly off in a quiet pattern of geometry. No time pressure — observe at your own pace.

Among a neat grid of geometric shapes, just one is slightly off.

There is no timer. No hurry. Just a quiet moment of seeing. On the train, between tasks, before sleep — a small ritual to bring your focus back.

■ 35 stages, 3 difficulty modes Stages 1–20 use a 4×4 grid. Stages 21–35 use a 5×5 grid. Each stage consists of 5 puzzles. Choose Easy, Normal, or Hard to play at your own pace. The leaderboard ranks Hard only.

■ Endless mode 4×4 Hard. The puzzles get harder as you go. One mistake ends the run. A separate Game Center leaderboard tracks your best streak.

■ 10 shapes Triangle, square, diamond, pentagon, circle, ellipse, hexagon, octagon, star, hexagram. Each with its own kind of nuance to spot.

■ 6 dimensions of difference Size, position, angle, thickness, count, edge length. One shape, just slightly off.

■ No timer, no pressure Observe for as long as you like. The difference reveals itself to the patient eye.

■ 100-point scoring A clear deduction system based on misses and time. Clear in 20 seconds without mistakes for a PERFECT badge.

■ Serverless. No account. No network calls. No login required. Everything stays on your iPhone.

■ Privacy No personal data is collected. All stats are stored locally on your device.

■ Pricing Free to play, 10 plays per day. Watch a short ad for extra plays. Daily missions grant bonus plays when completed.

For the small pauses in your day.