Don't measure, use your senses.
Eyeball 60 is a short visual estimation game where you guess the center, size, width, and direction visible on the screen without any numerical calculations.
- Fast problems lasting 60 seconds
- Daily record generated anew with every run
- 4 families and 12 problem types: Center Reconstruction, Value Duplication, Area/Weight Balance, Extension/Symmetry/Reflection
- Midpoint, Triangle Balance, Circle Center, Length, Ratio, Angle, Reflection Direction, Equal Area, Area Split, Axis Point, Mirror Point, Intersection Prediction
- Daily record and 12 new sequences generated every 60-second sprint, adaptive difficulty rhythm, 3 guidance messages per type
- Area calculates the actual area of ellipses and 3- to 6-sided polygons based on difficulty, while Length and Ratio generate comparison targets for different directions and lengths
- Score, Accuracy, and Weakness types viewed immediately in results
- 4 families of Strengths, Weaknesses, Error, Bias, and Consistency unlocked via a once-daily optional reward ad, per-problem selection, correct answer, error, and score, and practical tips for weaknesses
- Permanent Pro Pass: Removes all interstitial ads, precise analysis of every round, 12 types of intensive training, selectable difficulty, 60-second, 120-second, and no-timer modes, improvement trends based on your last 30 records, and up to 10 recent standard mixed 60-second records, along with recommended training for weaknesses.
Accuracy results are game scores and do not measure or diagnose intelligence, cognitive ability, or health status.
Ads may be displayed only when moving to the next screen after viewing results, rather than during gameplay. Rewarded ads are optional, and you can continue playing the base game without rewards. In regions where this is required, you can re-manage your privacy settings in the Settings screen. The Pro Permanent Pass provides the removal of all interstitial ads, detailed analysis of every match, 12 types of difficulty and timer training, improvement trends based on your last 30 records, and up to 10 recent standard 60-second records, all with a single purchase. Purchase restoration is supported.
12 types of 60-second sprints with varying order, difficulty, and wording. Check the selection, correct answer, and error reports for each question.