Travel Calculator

Sep 19, 2016

V1.7.2:
1. Fix a crash bug due to android internal problems on some specific devices. Just find another way to do things right.

V1.7.1:
1. Button style can be changed. Previous version's style can be picked back.

V1.7.0:
1. Now you can pay to remove Ads in main screen. Start it from menu "Remove Ads".
2. Change background color of buttons for better showing numbers and operators.
3. Fix some minor bugs. Update the underlying libraries.