Jailbreaking an iPhone, despite voiding your warranty, will not prevent you from continuing to use all the apps you’ve bought through the iTunes App Store. Rather, the process adds an alternative app store, Cydia, to your phone, which works alongside the official App Store. Though jailbreaking itself will not remove your old apps, the process may occasionally require you to restore the phone’s operating system, forcing you to recover your apps from a backup or to re-download them. Writer Bio

Do You Lose Your Apps When You Jailbreak an iPhone  - 96