Augmented Reality App for IOS and Android

I need an augmented reality app/shop creating where an on-line database/shop of approx 400 3D objects with audio descriptions can be browsed or searched, purchased via iTunes, play store etc, downloaded and individually displayed on a printed augmented reality marker in front of you using your iOS or Android device. I would like a small play/pause icon in the bottom right hand corner of the augmented reality screen that will play a short pre recorded audio description of the object you have loaded. I would also like a + ,- and DEFAULT button to increase or decrease the size of the loaded 3D model. The objects and descriptions are to have a 1 year expiry and automatically delete after 1 year. I would like the purchased and downloaded objects with descriptions to be stored and accessed under different categories with expiry countdown displayed It has to be a clean, easy to use interface as it is to be used by children 7+ A little like the app at [login to view URL] but a much more simple design with a shop and without the ability to upload your own models