Don’t freak out if you accidentally deleted an app on an iPhone or iPad, they can be easily redownloaded and restored at anytime:
- Open “App Store” and tap on “Purchased” at the bottom of the screen
- Tap on the “Not On This iPad” tab at top (or “Not On This iPhone”)
- Find the accidentally deleted app in the list and tap the cloud arrow icon to redownload the app, enter Apple ID password when requested
Note: the iPhone and iPod touch needs to tap the “Updates” button and then “Purchased”
The app will redownload and reinstall itself. You will not be charged for redownloading apps that you already own as long as the Apple ID is the same.
iOS apps aren’t the only thing that can be recovered and redownloaded easily though, and this method will work with iTunes Store purchases and Mac App Store purchases as well.
By Paul Horowitz - iPad, iPhone, Tips & Tricks, Troubleshooting