Appsync iOS 7 - How To Install Appsync iPhone, iPod Touch, iPad....

Step 1: The first thing you will need to do is iOS 7 

Jailbreak  (read more here)  running the iOS 7 firmware 

untethered. If you would like help with this process go to the 

How To Jailbreak Section.

Step 2: After you ensure you are Jailbroken you must 

launched Cydia, tap the “Sources” Tab, tap the Sources 

section and finally tap the Edit button in the top right hand 

corner of the screen.

Step 3:

You should now see an Add Button appear in the top left corner of the screen.
Tap the Add button now and type in the following source:

http://cydia.appaddict.org ( Don't use copy-paste)

After typing the source above tap the Add Source button.

Step 4: With the hackulous source now added into Cydia go into the Evad3rs.net Source by tapping on it and you should see AppSync for iOS 7+.

Install AppSync for iOS 7.0+ and then restart your iPhone, iPod Touch or iPad.

Congratulations! You have just installed AppSync and you can install  apps on the iOS 7 firmware.