0

Score

1

Level

5

Digits

0

Streak

0

Best Score

0

Longest #

Number Memory

Forwards · Classic

Pick the mode, recall type and speed below, then play. One more digit every round.

Mode

Recall

Spoken digits need speech synthesis, which this browser doesn't offer.

Speed

Show digits in groups

Back to Games

Your memory profile

Stored only in this browser. It shows Number Memory results; the other memory games keep their own.

–

Best span, forwards

–

Best span, backwards

–

Best span, one at a time

–

Best span, spoken

Daily: no finished dailies yet.

Span over time

No forwards runs yet. Finish one and your span shows up here.

Official runs only: coach runs and repeated dailies aren't plotted.

Visual MemoryDigits come easily? Test what you remember about where things are.Memory SequenceHold a growing pattern of tiles in order, one step at a time.
  • 100% Free
  • No Sign-Up
  • No Credit Card
  • No Free Trial
  • No Pro Tier
  • No Watermarks

Nothing is uploaded. Just open it and start.

Number Memory

Watch the number, then type it back from memory once it disappears. Every round you clear adds one more digit to remember, and each digit gets about a second on screen — a small, focused way to exercise your short-term numerical memory. Free, no sign-up, no download.

See exactly what went wrong

After a miss, your answer sits next to the real number with the wrong digits boxed, plus the true digit span you recalled.

Standard digit-span pacing

About a second per digit, an optional speed-up, no 20-digit cap, and long numbers shown in wrapping groups of 3 or 4.

Backwards, spoken, one at a time

Type the number in reverse, listen to digits read aloud (playable without looking), or watch them flash one by one.

Classic and Time Challenge

Play one continuous run, or race the clock to remember as many numbers as you can in 60 seconds.

Daily challenge

The same numbers for everyone each day, first attempt counts, with copyable result text and a share card.

Span history and chunking coach

A chart of your span over time, per-setup personal bests, and a practice coach that tints digit groups.

Large, readable numbers

Big, clear digits and a distraction-free layout keep the focus on memorizing, not squinting.

Private & client-side

The whole game runs in your browser. Nothing is uploaded, and it's free with no sign-up.

How to Play

  1. 1. Watch the number carefully while it's on screen.
  2. 2. Memorize it — nothing is written down for you.
  3. 3. Enter it after it disappears, using the keypad or your keyboard.
  4. 4. Correct answers make the next number one digit longer.
  5. 5. After a miss, check where the digits went wrong and try again; or play the daily challenge.

About the Game

Number Memory is a small, self-contained brain-training exercise built around one classic idea: hold a growing number in mind for a few seconds. It's designed to give your short-term numerical memory a light workout — the kind of skill you use whenever you hold a phone number, a code, or a total in your head for a moment.

It's meant to be a fun, quick mental exercise, not a medical or diagnostic tool. Playing it doesn't guarantee improved intelligence, doesn't prevent memory conditions like dementia, and won't permanently improve your memory — it's simply a game that happens to lean on the same short-term recall skills you use every day.

Related tools

Chimp Test

Free chimp test: memorize numbered tiles, tap them in order after they vanish. Timed reveal, daily board, trend chart and share card.

Memory Sequence

Simon-style memory game: growing sequences, a fair Daily, practice and reverse modes, progress history. Free, no sign-up.

Visual Memory Test

Squares flash on a grid, then go dark — tap the ones you remember. Daily board, mirrored recall, keyboard and tone modes. Free, no sign-up.

Stroop Color Challenge

Free Stroop test with five variants, a daily 30-round challenge and your own Stroop effect in ms, tracked over time. Colour-blind-safe mode.

Frequently asked questions

How do you play Number Memory?
A number appears for about one second per digit. Once it is gone, type it back with your keyboard or the on-screen keypad, then press Enter or Submit. Get it right and the next number is one digit longer; get it wrong and the run ends. After a miss you see your answer next to the real number with the wrong digits boxed.
What is my digit span?
It is the longest number you got completely right in a run, shown as "digits recalled". Missing a 9-digit number after clearing 8 digits gives a span of 8. Average adults land around 7 digits forwards.
What are the recall types?
Forwards is the classic test. Backwards asks you to type the number in reverse. One at a time flashes a single digit after another. Spoken reads the digits aloud with your device's own speech voice and shows nothing, so it can be played without looking at the screen. Spoken needs a browser with speech synthesis.
Can I change the speed?
Yes. Pick 1 second, 0.7 seconds or 0.45 seconds per digit, and optionally turn on the speed-up, which takes 25 milliseconds off each digit per level (never below 0.35 seconds). Each combination of mode, recall type and speed keeps its own personal best, so scores are only compared with like for like. Numbers keep growing up to 50 digits.
What is the Daily challenge?
Everyone who plays on the same local date gets the same numbers: forwards, one second per digit, one life. Only your first attempt of the day counts; once you start it, later runs are practice and say so. You can copy the result text or save a share card image, made on your device.
What does the chunking coach do?
Digits are shown in groups of 3 or 4 (you can switch groups off), because grouping is how people hold long numbers. The coach goes further for practice: it tints each group and shows the group pattern while you type. Coach runs are practice and never change your records or your chart.
What's the difference between Classic and Time Challenge?
Classic is one continuous run that ends the moment you enter the wrong number. Time Challenge gives you 60 seconds to clear as many numbers as possible; a miss just starts a fresh, shorter number.
Is my progress saved?
Personal bests, your settings, the daily result and a chart of your span over your last runs are stored in your own browser only. Nothing is uploaded and there is no account. Bests from before these modes existed were not carried over, because they were set at different speeds. The profile section also links to Visual Memory and Memory Sequence; each of those keeps its own scores.
Is it really free, and does it work offline?
It's completely free with no sign-up and nothing to install. The whole game runs client-side, so once the page has loaded it keeps working even with a flaky connection. Spoken digits use your device's speech voice; a few browsers send speech to an online voice, so prefer one installed on your device.

Spotted a bug or have a suggestion?

Found something broken, have an idea, or just want to say thanks about any of our tools? Every message reaches a real person.