Clone Magic, Splashtop Wired XDisplay, AmpliTube and other relevant distribution, discounts and updates in the vast Apple app store.
All the suggestions below are relevant at the time of this writing (12:00 MSK). Promotions and sales are for a limited time, do not miss them!
App Store
temporarily free
TinyMemo
Uber-minimalist notes with support for Touch ID. There sync with iCloud, Rich text formatting tags. It is also convenient with quick access panel just above the keyboard.
Clone Magic
Not a bad app, allowing you to create clones of objects and people in the picture. Of the advantages it can be noted convenient and easy cloning process, automatic shooting and the ability to share photos ready to Instagram, Facebook or Twitter.
Splashtop Wired XDisplay
Utility that turns your iPhone or iPad to an external display for your Mac or PC. Powered by cable, which provides the minimum delay. Supports Mac 10.8 and above, Windows 7 and above.
discounts
Phoenix Pro Photo Editor
Cute Photo Editor free app purchases. It contains a wealth of tools for photo processing, including filters, lens effects, frames, stickers, text boxes, and various "uluchshayzery". The application also has rich export features in Facebook, Instagram, Flickr and Tumblr.
Grafio
Application for creating all kinds of charts, graphs and diagrams that can be used to visually display various data or ideas.
Price: 749 rubles
AmpliTube
A godsend for guitarists. AmpliTube allows you to turn your iPhone into a real guitar processor. It contains a bunch of effects, plus a bunch can be purchased separately. To connect the instrument to your iPhone will need iRig. There are also other versions of the application, containing the settings of the cult equipment and tuning famous guitarists.
Price: 1190 p. 749 rubles