A few weeks ago I was approached by Positive Grid asking if I wanted to demo their apps Bias and Jamup Pro! Big thanks to them, I love it! I've got to say, I'd prefer Bias+Jamup to quite a few other famous amp modelers! Great tone in a tiny package you can take anywhere with you! Check em out!
JamUp is a professional Guitar/Bass Multi-Effects Processor for iPad, iPhone and iPod Touch, praised by artists such as Periphery, Trivium, Ola Englund, Jeff Loomis and Keith Merrow. BIAS is the most realistic Amp Designer, Modeler and Processor. Both apps can be integrated and work seamlessly.