It is true that some of these multi-effect apps offer tremendous value for the $10 - $20 they typically cost.
I tried Tonebridge, but couldn’t get it to work with my Focusrite iTrack Solo, because it would not let me select the 2nd input. Very disappointing - I really like the idea of presets based on popular songs.
I had much better luck with ToneStack, you might want to check that out as well. It also includes a mini-DAW recorder, and works as an AU3 extension with the AUM audio unit and MIDI mixer.
Disadvantages I see with the app approach:
- you need to have both a tablet and an audio interface
- you need an external foot switch if you want to switch effects hands free
- setup is more complex and error prone because of extra cables and tablet settings
- all the day to day problems of computers…software bugs, updates that break things (I’m looking at you, Justin App!), conflicts with other apps, etc etc etc
For me, it’s worth the hassles for the low cost and the flexibility. But I can see why some might prefer a hardware MFX, or individual pedals.