What you get

Pair Hunt

Two grids at once - one letter gone, one digit gone. Split your attention and keep both halves sharp.

Letter Hunt

A letter flashes in one cell, then everything empties. Put it back where it was - the right letter in the right square.

Number Hunt

Nine cells, one digit missing, the clock running. The simplest one to explain and the hardest to beat your own time on.

What you are training

Left side, right side

Both halves, talking faster

Letters and digits are handled by different networks in the brain. Pair Hunt puts them side by side and makes you switch between them under time pressure.

Hold, then place

From a flash to a memory

A letter appears for a moment and is gone. Holding what you saw, and the square it was in, is exactly the step where a passing impression becomes something you can still use seconds later.

Find it now

Attention that filters

Nine digits belong in the grid; only eight are there. Number Hunt trains you to sweep past everything you can see and react the moment you spot the one that is missing.

It starts as a game. Rounds are short, you watch your own times improve, and that happens because you are playing.

What it doesn't do

✓ No data collectedNo account, no sign-in, no analytics, no trackers. Your times are written to your device and stay there.

✓ Nothing sent over the networkThe games run fully offline. Nothing about how you play is uploaded, watched or shared.

✓ No in-app purchases, no adsYou buy the app once. Nothing is locked, nothing nags you, no advertising ever appears.

✓ Safe for children, useful at any ageNo chat, no links to strangers, nothing to stumble into. From 3 to 133 - the exercises work the same at every age.

StarSim - a real gravity simulator

A genuine Newtonian n-body simulator for iPhone and iPad. Same studio, same no-tracking policy.

→

ColorMem - a color memory drill

Watch a color appear, then pick it out from a set of close, tricky shades. Same studio, same no-tracking policy.

→

Something is missing. Find it.