The Musicology Group has released Vintage Guitar for iOS. It's a free app with optional in-app purchases. This is what they have to say about it...
"From the first batch of transistorized effects to the latest boutique pedals, experience a fresh take on classic fuzzes and distortions, phase shifters, chorus/flangers, echo/delays, and wahs. Given the history with such a long list of great sounds it was difficult to decide where to start, so why not right at the beginning. Starting with the very first transistorized fuzz effect released in 1962 we begin our journey. Follow with us as we revisit a long list of classic effects for the electric guitar through our first app for iOS, Vintage Guitar."
Pricing and Availability:
Free at the app store.