This app is designed for both iPhone and iPad
https://itunes.apple.com/US/app/id870376916?mt=8- The Complete Walkthrough for Every Level;
- Useful Tips for Solving Puzzles;
- Common Issues Solutions and Fixing Tips;
- Many Helpful Videos;
- And More...
Compatibility: Requires iOS 6.0 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5.
