LiquidSonics tells us that their Mobile Convolution is a true-stereo reverb processor for use with Audiobus and Inter-App Audio hosts. They say that it allows the IR to be stretched, cropped and envelopes applied to shape the sound of the reverb in a very natural and musical way. A collection of impulse responses is provided, and external impulse responses can be added via Open-In... support in apps like Mail, Safari and Dropbox, or downloaded directly from within the app.
Pricing and Availability:
$9.99 at the app store.
More information:
Physical modelling instrument
Sega sound for now
Super flexible synth from U-He and it's free
Hands-on demo of the Exquis and its MPE expressivity