AppSync For iOS 4 To Install Cracked Apps On Jailbroken iPhone, iPod Touch
If you want to try out a cracked app on your iPhone or iPad before you decide to buy the full version, then you need to install the .IPA file manually without using iTunes. AppSync is a free cydia app, similar to Installous which patches the Mobileinstallation file on your iPhone or iPad, thereby letting you install the .IPA files manually.
Note: This article is for informational and educational purpose only. We do not recommend using cracked apps on your iPhone or iPod Touch.
For all those who were able to jailbreak iPhone or iPod Touch on iOS 4, here is how you can install cracked apps on your iDevice:
1. Launch Cydia on your jailbroken iPhone or iPod Touch.
2. Tap on Manage, then Sources.
3. Tap Edit and then Add.
4. Enter http://cydia.hackulo.us and tap Add Source.

5. Tap Add Anyway when asked for a confirmation, and let Cydia add the repo and update it’s sources.
6. Tap Return to Cydia.
7. Now search for AppSync for OS 4.0 and install this application.
That’s it. From now on, you can install any .IPA files manually on your iPhone or iPod Touch.
Installing cracked .IPA files
Doing this is as simple as double clicking the downloaded .ipa file and syncing it with your device through iTunes. As soon as you press Sync, the installation is started.
UPDATE 1: AppSync 4.1 For iOS 4.1 is now available.

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