Digits
3
Hearts
2
Best span
—
A forward digit span test: memorize the digits as they appear, then type them back in the same order. Starts at 3 digits and grows by one each success — 2 misses end the test.
Digits
Hearts
Best span
A forward digit span test: memorize the digits as they appear, then type them back in the same order. Starts at 3 digits and grows by one each success — 2 misses end the test.
This is a forward digit span task: digits appear one at a time, then you enter the same sequence in the same order. The first round contains three digits. A correct answer adds one digit to the next round; a miss repeats the same length with a new sequence, and two misses end the test.
Your result is the longest sequence you recalled correctly during that run. The sequences are generated at random and immediate repeated digits are excluded, so separate runs are similar in structure but not identical in content.
Use the same device, avoid writing the sequence down and minimise interruptions when comparing attempts. Altamens has not established population norms or a reliable-change threshold for this version. It is an informal practice task, not an IQ, medical or diagnostic assessment.
To practise another number-memory task, try Number Stairs →
For more tasks that use temporary recall and updating, explore our working memory games →
Cognitive training exercises to improve focus
Every skill comes with a free test: get your baseline in under a minute, then retest weekly to track your progress. Scores are saved to your profile so you can watch them move as you train.
Calculate equations and make split-second pathing adjustments as the screen scrolls.
Track in the game: Your speed and accuracy while solving equations and choosing a path.
Hold numbers in short-term memory while physically navigating winding turns.
Track in the game: How consistently you hold and use the task information during a round.
Trace a dynamic, shrinking path without drifting or lifting your finger.
Track in the game: Your response timing and path accuracy during repeated rounds.
Common questions
The score is the longest sequence you recalled correctly in order during the run. The test starts at three digits, grows by one after a correct answer and ends after your second miss.
It is forward digit span: enter the digits in the same order in which they appeared. It does not include a backward-recall round.
Altamens has not validated a population benchmark for this implementation. Use your result as a personal task baseline and compare several attempts made under similar conditions rather than treating one score as a percentile.
No. It is an informal browser-based recall exercise. It cannot diagnose a condition, estimate IQ or replace a standardised assessment.