NineSeconds is a light brain workout that fits into nine seconds.
Downloads
Open the app, press Start Training, and play one short round. Connect dots, remember digits, test your reaction, or retrace a path. At the end you see the time you used, one to three stars, and a bit of encouragement. Stop after one round, or play a few. There is no account and no feed.
Connect the Dots
Link every dot with one continuous line. Start on green and finish on red. Move only horizontally or vertically, visit each dot once, and get there before the timer reaches 0. You can undo, take up to three hints, or restart the level.
Number Memory
A short run of digits appears, then disappears. Type it back inside the same nine seconds.
Reaction Tap
Tap the green circle. Skip the coral one. The round lasts the full nine seconds.
Path Memory
Watch a path, then walk the same squares yourself.
How scoring works
On timed rounds, three stars means at least four seconds were still on the clock, and two stars means at least 1.5 seconds were left. Reaction rounds are scored from hits and mistakes. Clearing a round on a new day continues your streak. Skip a day and the current streak goes back to the start. The longest streak you have reached is kept.
A small plan for today
Each day has three challenges: finish any round, finish one in seven seconds, and earn three stars. A calendar shows the days you played. The set refreshes at local midnight.
What you keep
Stats include sessions, stars, minutes, best times, and recent rounds. Four light themes are included. Sound and haptics can be turned off. The app follows the system language, and you can switch to English or Simplified Chinese in Settings.
Apple Health, if you want it
After a successful round, NineSeconds can save the time you actually played as Mindful Minutes. You can say no. The rest of the app does not change. Health access is never required, and health data is not used for advertising.
Made to stay on your phone
There is no sign-in. There are no ads and no trackers. Progress is stored on the device, and you can reset it whenever you want.