As many flashaholics will tell you, a lot that goes into properly flashing a ROM. You have to make sure your Nandroid is up to date. Then you have to back up your applications. Upon flashing the ROM, you have to restore all your applications and get your settings just right once again. The whole process can take some time, especially the app backup and restore process. Many flashers use applications like Titanium Backup or MyBackup. What if it were possible to flash your apps in recovery right after the ROM, and cut the time spent restoring down further?
Now, there is a way. Google Play Store developer SCDevs has released an application called App2Zip that takes your current applications and places them into a custom recovery-flashable update.zip. This can be very handy, especially for the compulsive flashers out there. Users can flash the ROM update.zip and then simply flash their applications in the same recovery session, saving a considerable amount of time.
The application is easy enough to use. Simply run the app, give it root permissions, and it will create an update.zip. SCDevs explains from their app page:
App2zip is in very early stage, does NOT work on some devices, so please first of all make a test to see if it works for you (e.g. backup an app you don’t care much, uninstall it and restore back via CWM recovery). Use at your own risk!
There have been reports by Samsung Epic 4G users and T-Mobile Galaxy S II users that the application is compatible after a few device-specific modifications. Of course, it wouldn’t hurt for anyone to test it on their devices, as this could be an invaluable flashing tool.
For additional details, follow the links above for discussion and download links._________