Appurpose Studio

Un7z - 'Extract .7z files from Mail and Safari...'

Paid

Efficient Extraction of .7z Files on iPhone

RarExtractor - Extract RAR, Zip files...

Paid

Efficient File Extraction for iPhone Users

WiFileTrans - 'Transfer files between iOS devices'

Paid

Efficient File Transfer for iOS Devices

iFlashDrive - 'Flash Drive App for iPhone'

Paid

Manage Files Efficiently with iFlashDrive