Digit Span
Remember a sequence of digits and enter it in the same order. Choose Fixed or Level Up play.
Think at your pace
Memory, math, and decisions—at your pace.
Choose one of six games, set its level and options, and begin on your iPhone.
- Free
- No ads during games
- No account
- Play offline
Six trainings
Six ways to think, on one palette
Choose the level and options before each game. Self-paced games wait for you to select Next after feedback.
N-back
Decide whether the current digit matches the one shown N steps earlier. Review feedback, then move on yourself.
Percentage
Work with base amounts, compared amounts, rates, discounts, and changes using whole-number problems.
Planning
Remember a fictional plan, then decide using sequence, priority, and changes as dates, times, and events appear.
Probability
Compare probabilities, combinations, and strategies to judge what is most likely. Five question types are mixed at every level.
Magnitude
Read large numbers, align units, multiply or divide by powers of ten, and check estimates at your own pace.
Designed for choice
Choose the conditions—and when to stop
Choose before you start
After choosing a game, review its level, question count, and available presentation options before play begins.
Pause or end at any time
Pause during play and end the session when needed. From results, you can return with the same options selected.
On-device history and bests
History and best scores for each play condition remain on your iPhone and are never sent to an online ranking.
Standard iOS sharing
Only when you choose Share does ThinkPalette pass a result to the standard iOS share sheet. It never posts directly.
A quiet place for ads
Ads stay at the very end of Home
After you scroll past the high-score summary, one ad may appear at the end of Home. Ads do not appear during game setup, play, feedback, results, history, or settings.
If your privacy state does not permit an ad request, no ad slot is shown. While an ad is loading or temporarily unavailable, a small blank space may remain at the end of Home so automatic refresh can recover. All six games remain available.
Your game records stay on this iPhone
There is no account, in-app purchase, or transfer of game records to a Developer-operated server. History, best scores, and settings remain on the device and do not sync between devices.
The App may communicate with Google’s services for advertising and consent management. The Privacy Policy explains the data types, purposes, and available choices.
iPhone / iOS 26.0+
Free on the App Store
ThinkPalette supports Japanese and English. No account or in-app purchase is required.
Important notice
ThinkPalette is a game intended for recreation and training. It is not a medical device and is not intended for diagnosis or treatment. It does not guarantee improvements in cognitive ability or daily life.