How many digits or letters can you memorize instantly?

Generally, it is hard with more than 7, especially new telephone numbers...

With this simple application you can train with memorization exercises, selecting between strings of:

- only digits
- only letters
- digits and letters

and 4 levels of difficulty:

- easy
- medium
- difficult
- custom

with different timers, initial string lengths, and number of attempts after which the string increases or decreases in length.

Each training session consists of 10 exercises, which simply show the string for a few seconds, and waits for your answer.

Then, depending on the response, the string increases or decreases in length.

Testing it, after a couple of weeks of exercises (5 minutes a day), I got an increase of about 40% and now I can memorize strings of more than 10 characters.

Definitely the result is subjective, however it is an excellent exercise for the brain.

This is not a game, but an exercise, even tedious, requiring perseverance if you want to get some decent result.