here are some paid iOS applications for your iPhone and iPad, which you can get for Free for a limited time.
Downloader for Soundcloud and Music Player
This application allows you to download the tracks from the SoundCloud website. If you found a sound track interesting just download it and you can listen it when ever you needed and yes offline.
Here is the link to the application grab it for free now and save $1.99. This requires iOS 7.0 or higher.
Net Master - IT Tools & LAN Scanner
NetMaster is an app which includes many network tools which help you to analysis and fix network related issues. The utilities includes
Geographical Trace Route
Read more and get it from iTunes (Save $4.99). Requires iOS 6.0 or Higher.
RPG Band of Monsters
You can get this game worth $7.99 for free for a limited time. The game offers in App purchases but to finish the game you will not have to purchase them.
Get it (requires iOS 6.0 or Higher)
Remember these may be available for free for a limited time and all these are compatible with iPhone, iPad, and iPod touch and optimized for iPhone 5.