Number Memory Trainer

Grow your digit span level by level with a Flash mode and local leaderboard.

Level: 3Best: 0

Memorize the number, then type it.

Про інструмент Number Memory Trainer

Progressive digit-span trainer that grows your working memory one digit at a time. Starts at 3 digits and rises to 5, 10, 20+ — each correct recall unlocks the next level. Two modes: Normal (display time scales with length) and Flash (every number shown for only 0.5 seconds). Local leaderboard tracks your top 10 results per mode.

Як використовувати

  1. 1Choose Normal or Flash mode.
  2. 2Click Start. A number appears for a few seconds, then disappears.
  3. 3Type the digits exactly and press Enter.
  4. 4Each correct answer adds one digit; one mistake ends the run.
  5. 5Beat your best level to climb the local leaderboard.

Часті запитання

What is digit span?
Digit span is the longest sequence of digits you can recall after a single presentation. Average adults reach 7 ± 2 digits. Sustained training can push that span higher.
What is Flash mode?
In Flash mode every number is shown for exactly 0.5 seconds, regardless of length. It tests rapid encoding and chunking, not just rehearsal.
How is the leaderboard ranked?
Each finished round adds an entry with the level you reached. The top 10 entries (by date) are kept in localStorage on your device.
Does the test send data anywhere?
No — every result and leaderboard entry stays in your browser's localStorage.