Science-based memory trainer

Exercises for every kind of memory

Each one is built on a classic method from cognitive psychology and measures its own kind of memory. Together they build your memory profile.

Digit Span

The rep your feed never gives you

A string of digits flashes onscreen, then vanishes — no rewind, no peeking. You type it back from memory, and the length quietly adjusts to how you're actually doing, not how you'd like to be doing.

Watch the sequence for a few seconds.
Type it back from memory.
Nail it three times straight and the level goes up; dip below 70% accuracy and it eases off.
Higher levels flip the script: you recall the digits backward.

Digit Span is the classic subtest from the Wechsler scales (WAIS) — neuropsychology's go-to measure of working memory for almost a century. Training on it improves your results on this exact task, largely by building chunking: grouping digits into blocks, so 849277 reads as 84-92-77. Whether that skill spills over into memory or intelligence more broadly is still an open debate, so we won't pretend it does.

Someone rattles off their number, and for once you don't have to ask 'sorry, one more time?'
A verification code lands, and you actually type it in before it expires.
You punch in a PIN at checkout instead of holding up the line to check your notes app.
Someone drops a price and a date mid-conversation, and both actually stick until you find a pen.

Endless scroll trains your thumb. Digit Span trains the part of your brain that actually holds a number.

Face–Name Association

Meet someone once. Actually remember their name.

First, a run of faces paired with names, one after another. Then the same faces come back with no labels, and you have to recall who's who. The higher the level, the more faces and the fewer crutches.

Memorize N faces with names — 3 to 10, depending on your level
Faces come back with no labels — you recall the name from memory
Early levels: pick from 4 options. Higher levels: type the name yourself while also keeping track of each person's job
Difficulty tunes itself: three rounds above 90% accuracy and you level up, drop below 70% and it dials back

This drill mirrors FNAME (Face-Name Associative Memory Exam), a classic neuropsychological measure of associative memory for face-name-occupation sets. It runs on active recall and spaced repetition — techniques research links to stronger retention of what you practice. You're not reading about the method here. You're doing it.

A new coworker says their name once — and it hasn't evaporated by lunch
Five new names on one client call, and you're not scrolling the chat for a hint on who's who
Pickup at your kid's school, a dozen parents — you use actual names instead of a one-size-fits-all "hey!"
Networking event or interview: you drop their name a second time, no awkward "uh, you"

Your feed serves up a thousand nameless faces in stories every single day. This is the one face drill that pays off outside the feed — remembering the person actually standing in front of you.

Spaced Repetition

Review the second before you'd forget

A deck of question-and-answer cards — words, terms, facts, whatever keeps slipping your mind. You try to recall the answer yourself first, no peeking, then flip the card and rate yourself with brutal honesty: nailed it, barely, or nope. From there, it's not your job to remember when to review — the card comes back exactly when you're about to forget it again.

Try to recall the answer before you peek
Rate yourself, honestly: no idea / shaky / easy
An SM-2-style algorithm schedules the next review — timed for right before you'd forget
5–15 minutes a day, difficulty adjusts itself: three accurate answers in a row bumps you up, dip below 70% and it eases off

Spaced repetition and active recall (retrieval practice) aren't some trendy hack — they're textbook cognitive psychology: the spacing effect goes back to Ebbinghaus in the 1880s, and the value of trying to recall before checking the answer comes from classic work by Roediger and Karpicke. This isn't abstract theory: drilling with cards directly improves performance on the exact task you're training — pulling up the right word, date, or term exactly when you need it.

The foreign word that always vanishes mid-sentence, right when you need it
Exam terms without the all-nighter and a gallon of coffee
Work numbers and facts you can actually recall instead of googling them for the fifth time
Your own decks for anything — error codes, the coworker's name you're too embarrassed to ask again

Your feed feeds you whatever sticks; this card feeds you what you're about to forget — right when it counts.

Visual Pattern Span

One glance at the grid — either it stuck, or it didn't

A grid of cells lights up for a couple of seconds, then goes dark. Your job: tap out exactly which cells were lit, from memory, on a now-blank grid. No replay, no hints — just one look, and whatever your eyes actually held onto.

Grid size climbs with you, from 3×3 up to 6×6
A handful of cells flash for a couple of seconds, then the grid goes blank
You tap the cells you remember being lit — guess wrong and it counts against you
Three clean rounds in a row and the grid grows; slip below 70% and it eases back down

This one's modeled on the Visual Patterns Test, a classic tool for measuring visual short-term memory (Della Sala and colleagues). Unlike the Corsi block-tapping test, which cares about the order you tap in, this one measures raw static capacity: how many pieces of a pattern you can hold in view at once, no sequence required. Training like this improves your results in exactly that task — holding onto where things are and how many of them there are.

Remembering which level and row you actually parked on, no victory lap around the garage
Spotting the right button on a panel at a glance instead of poking each one to find out
Skipping the turn-the-bag-inside-out routine and just knowing which pocket has your keys
Holding a new place's layout in your head instead of checking your phone at every turn

Endless scroll trains your eyes to slide past everything and hang onto none of it. These five minutes do the opposite: look once, keep one detail — not a hundred headlines.

Try them all in the beta

One daily session — 5–15 minutes. Difficulty adjusts itself.

Test your memory — 2 min