By far my favorite audio app...

I write film trailer cues and love sending guitar or drum tracks to this app and messing around with them while at the beach or stuck in traffic. Ive come
up with some pretty cool sounding stuff on my iPhone using Filtatron. Beautiful interface and amazing sound. I hope they keep supporting it, Id be sad if it stopped working!

Highly recommended.

siwhi8 about Filtatron, v1.4.5