This app is an android shortcut for quick access to the a-z.mobi website - no more than that
After downloading the azmobisport.apk then install
If the install option does not appear\happen - then chances are 'Unknown Sources' is not enabled
An easy way to install then is to click on the .apk file with your phone browser
This will then guide you through the installation process
By downloading the app then you are deemed to have accepted the terms of use