* ver 0.54

The checkout list for Double out(separate bull) was updated.

* ver 0.53

Fixation of the bug to which an application crashes during training.

* ver 0.50

ActionBar is introduced. The user interface was updated.

Bug fixation for Android 2.2 and 2.3.

* ver 0.34

Fixation of the error relevant to a hint in case checkout does not exist.

Some bugs relevant to Android 2.2 are fixed.