- iPhone horizontal (480×320)
- iPhone vertical (320×480)
- iPad horizontal small (800×600)
- iPad vertical small (800×600)
- iPad horizontal (1024×768)
- iPad vertical (768×1024)
Don’t worry, you don’t need to add a logo, links, or text if you don’t want to. Just don’t fill them in and they won’t show up.
Note: The full-sized iPad ones (1024×768) are pretty big. In fact, I really only use them for testing to get an idea how they’ll look in the actual device.