Robook Reader is a free app for reading robook files (.rob) on your iPhone or iPad.
To upload your .rob files to Robook Reader, use iTunes File Sharing. Here’s how:
1. Connect your iOS device to your computer and open iTunes.
2. In iTunes, select your device, then click the Apps tab.
3. Scroll down to File Sharing, select Robook Reader from the list, then click Add.
4. Select the .rob files to transfer, then click Choose.
The Robook file format is used for graphic storytelling. To create your own Robook files, check out http://www.storybuilder.net.