Operation without the app is basically impossible, only 4 live-reachable presets, no by-pass, most captures are crap, not much support for good tones, so this ended up as a glorified delay/flanger on my Pedalboard at the moment.
Having said that, it has some really good sounding presets, and the way it does captures is way more convenient and easy than any other device. However I think the cons outweigh the pros