iZip is a free iPhone app which help you to zip/unzip files from your iPhone. If you are looking for a perfect zip/unzip app for you device, this is the right one for you. It also supports password protected compression which adds more security to your files.
Features:-
* Compress files from your local files, photo from camera roll, files from iTunes music and files from Dropbox.
* Use password to protect your compressed files.
* Open/View compressed files in various formats.
* You can e-mail the compressed files or upload it to Dropbox.
* Data statistics option show you the number and size of files in each folder.
* Download files to iZip from Dropbox to compress.
* Extract and view files from zip file formats like Zip, RAR, 7zip, etc.
* You can print files directly from iZip.
Screenshots:-

You can read more and download iZip for your iPhone from iTunes.