Shorthand Training-Memory app for iPhone and iPad

Shorthand training is a simple, effective and scientific memory training method.
Remember the randomly generated group of numbers within the specified time, click the numbers in order, the shorter the time taken, the higher the memory level.
Features:
1. Cultivate concentration and memory;
2. Improve visual stability, memory accuracy, and directional search capabilities.
Persist in practicing for a period of time every day, in addition to improving your memory level, it can also improve your concentration.