This app is made using Varshyl Mobiles unofficial Pinterest iOS framework.
Features in this framework:
1) You can implement your own login window for authentication
2) Get notified about the error during pining or authentication process
3) Get notified if no board exists
4) Create new board to pin
5) Get list of existing board in Pinterest
6) Pin local images to existing or new board on Pinterest
7) Pin multiple local images to existing or new board on Pinterst
8) Pin remote image to existing or new board on Pinterest
9) Pin multiple remote image to existing or new board on Pinterest
Framework link http://www.varshylmobile.com/pinterest-framework-for-ios/