Short-term memory
The digit span you can recall is a classic measure of short-term and working memory capacity.
Free brain game
Number Memory Test
Memorize the number, then type it back. Each round adds one more digit. How long a number can you hold in your head?
Digits: 0Best: 0
What this game trains
Attention & encoding
You have only seconds to encode the number. Focused, deliberate attention is what makes it stick.
Linked to reasoning
Memory span correlates with the fluid reasoning a full IQ test measures.
This mini-game is for training and fun — the number of digits you recall is not an IQ score.
Ready for the real challenge?
The number game is just a warm-up. Take the full iqmetria test to get your IQ score and percentile.
Take the IQ test →