I have tested your app ..
Here some sugestions : If you custumize your design make it to to end , all pannels shoud have same theme , if you customize button do it for all your controls.
You don't have any intructions ...the user do not know what the app does .
You may not allow entering text in the fields were you are expecting numbers
Good luck
App updated, unified style, user's manual.
Added new functions as export to PDF, calc distance and time for each trackpoint, voice indications...
B4Android is great!!!!!
I remove Lite (free) version, it is too dificult to keep updated 2 versions of same App at same time.
I'm thinking about easiest way to create and maintain lite version.
Thanks for your comments!