With the new device releases the number of icons of one applicaction has incresead considerably and it’s impossible for me to remember all of them. So just in cas someone is in the same situation as me here is a list of all of them.

App Store Icon

• 512×512

Application Icon

• 114×114 iPhone 4
• 72×72 iPad
• 57×57 older iPhones

Spotlight Search Results and Settings Icon

• 58×58 Spotlight/Settings iPhone 4
• 50×50 Spotlight - iPad
• 29×29 Settings - iPad/older iPhones

Document Icon

• 44×58 iPhone 4
• 320×320 and 64×64 iPad
• 22×29 older iPhones

I found this usefull PSD in “Cocoia Blog”.