Free · every day · 20 seconds
The Daily Signal
One short attention challenge per day. Everyone who plays on the same calendar date gets the same sequence of 20 signals and decoys — so you can compare grids with friends fairly.
How it works
- Tap each cyan circle as quickly as you can.
- Don’t tap the amber diamonds. Holding back is the hard part.
- Each flash lasts 0.8 seconds. Taps faster than 150 ms are treated as guesses, not reactions.
- The sequence is generated from today’s date, so it resets at midnight in your time zone.
Reading your grid
🟦 a signal you caught · ⬛ a decoy you correctly let pass · 🟧 a decoy you tapped · ⬜ a signal you missed. Sharing sends only this grid and two numbers — nothing about you.
Want the reasoning behind this format? It’s a short go/no-go task — a classic way to measure how well you can stop a response that has become a habit.
Daily Signal #99
2026-09-26 · your local dateToday’s 20-second challenge
20 flashes. Tap the cyan circles as fast as you can. Let the amber diamonds pass.
Tap Don’t tap