Guide for Checkout 51

Category	Price	Seller	Device
Book	Free	Nguyen Dong	iPhone, iPad, iPod

I made this guide for my interests and share experiences with others.

My apps has some tips such as:
+ Check if my app is up-to-date
+ Fix: Can’t log in with Facebook anymore
+ Get balance back
+ Update security settings
+ ...
If you have anyproblem about the application, please contact me at: [email protected]