n-back Hack 1.3.2

Developer: dicwizard.jp
Category: Education

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Description

Good brain trainer app for improving your working memory.

< USAGE >
1. Select level (1-10).
2. Memorize the answer of easy addition for the level times.
3. Continue memorizing and tap the last digit of the answer of n times before (NOT current answer).

If you don't know what is N-Back, please see below.
http://en.wikipedia.org/wiki/N-back