Thrill-Project

To have it somewhere posted and to share with you, I researched the resolutions a developer should use for icons and images on the iPhone. If I come across other formats, I’ll update the list.

official resource
iPhone Dev Center: iPhone Human Interface Guidelines – Creating Custom Icons and Images

small icon

29 x 29

big icon

57 x 57

bar icon

20 x 20

launch image
320 x 480