App Store Icon
- 512x512 (scaled down to 175x175 for display in the store)
Application Icon
- 114x114 (iPhone 4)
- 57x57 (older iPhones)
- 72x72 (iPad)
Spotlight Search Results and Settings Icon
- 58x58 (iPhone 4)
- 50x50 (Spotlight results for iPad)
- 29x29 (settings for iPad and older iPhones)
Document Icon
This is a new icon type in iOS 4. It’s used if your app creates a custom document type. The iPad uses the document icon in two different sizes.
- 320x320 (iPad)
- 64x64 (iPad)
- 44x58 (iPhone 4)
- 22x29 (older iPhones)