Ygolite is a dueling app for iOS devices. It uses the same engine as Ygopro but without card pics. You can add pics to Ygolite via File Sharing.
What you need
The latest version of iTunes on Mac OS X or Windows
An iPhone, iPad, or iPod touch with Ygolite already installed
The pics zip file
Downloading the pics
Download the pics.zip file. You can find the latest version at the download page.
Extract the pics.zip to a new folder called pics. On OS X you can do this by double clicking the zip file.
Copy the files from your computer to Ygolite
Plug in your iOS device to your computer using a USB cable.
Launch iTunes on your computer.
Select your device in iTunes.
Click Apps in the list on the left and scroll down to the bottom of the page.
Select Ygolite in the File Sharing section.
Drag and drop the pics folder onto the Documents list. This will take a while.
Restart Ygolite on your device. The pics should work now.
Copying new files for updates
Changing individual files in a folder is not allowed. To avoid having to copy the entire pics folder for each update, you can also put individual pics in the root folder.