What's New

Fixed a problem that will not start up at iOS7 or Later.
iPad Ready.

App Description

I utilize "a fermi estimate" for problem solving

"JiatamaRyoku" is the capability to carry out logical thinking. This book describes the training method of "JiatamaRyoku".

Caution:This book is Japanese.

iPhone Screenshots

(click to enlarge)

JiatamaRyoku, Logical Thinking screenshot 1 JiatamaRyoku, Logical Thinking screenshot 2 JiatamaRyoku, Logical Thinking screenshot 3 JiatamaRyoku, Logical Thinking screenshot 4 JiatamaRyoku, Logical Thinking screenshot 5

iPad Screenshots

(click to enlarge)

JiatamaRyoku, Logical Thinking screenshot 6 JiatamaRyoku, Logical Thinking screenshot 7 JiatamaRyoku, Logical Thinking screenshot 8 JiatamaRyoku, Logical Thinking screenshot 9 JiatamaRyoku, Logical Thinking screenshot 10

App Changes

  • July 16, 2011 Price increase: $13.99 -> $17.99
  • October 10, 2014 New version 5.0