Today's drill
Hold the Line
Hold the button. Don't let go. 3 rounds × 7 seconds.
Play today's drill →
Mind games
27 cognitive drills
Pick a dimension. Each drill runs in under five minutes — no leaderboards, no shame, just a quiet way to notice what your attention is doing today.
Dual N-Back
SoonTrains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryBlock Memory Challenge
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Short-term Memory Test
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Frog Memory Leap
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Focus Sudoku
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Memory Match
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Baby Animal Match
Trains working memory — the brain's scratchpad for holding and manipulating information.
Working memoryOpen drill →Mahjong Dual N-Back
SoonTrains working memory — the brain's scratchpad for holding and manipulating information.
Working memory
Drills run client-side. Your data stays on this device — we don't ship scores anywhere.
Blue Dot
Tap blue. Skip red. 30 seconds.
SelectiveInhibitory
A reaction-time drill. A blue dot appears at random — tap it. Red dots appear too; ignore them. The 30-second clock is the only pressure, and you can pause anytime.
Schulte Grid
Find 1 → 25 in order. Gentle peripheral vision.
SustainedWorking Memory
A 5×5 grid of numbers 1–25 in random order. Find them in sequence as fast as you can. Builds peripheral vision and quiet sustained attention — without timer pressure.
Hold the Line
Hold the button. Don't let go. 3 rounds × 7 seconds.
Sustained
A sustained attention drill. Press and hold the button for 7 seconds. Release early = miss. Complete 3 rounds to finish. Builds resistance to the impulse to give up halfway.
Extended library
Want more drills?
Six research-backed one-minute drills — Stroop, Sequence Memory, Vigilance and more. Built on the same anti-shame principles as the three above.