Abacus Hatou

Hatou is a traditional calculating tool of Japan. It had given priority to
* the 読み : reading and 書き : writing and そろばん : abacus as a base of the
* education since Edo period. Hatou is a abacus application.

twitter : @roborovskiiinfo

Recent changes:
1.3.0 : Galaxy Tab supported.
1.3.1 : bug fix.