Arapolarmic is a pretty cool app for the iPad, using augmented reality it allows the user to see the polar pattern of the microphone in real time. Not only that it contains the technical information of hundreds of mics.
The first release of Arapolarmic includes microphone models of the following brands: AEA, Audio-Technica, Audix, Beyerdynamic, Electro-Voice, Lewitt, Mojave Audio, Oktava, Royer Labs, Schoeps, Telefunken-Elektroakustik and Violet Design.
The company promise free mic updates as wel as a request service for those mics not shown in the database.
The app runs on an iPad and is available from the Apple App Store for £79.99