Loopy Pro

Quite easy to describe: Loopy Pro can be ANYTHING YOU WANT.

The built in editor allows you to build your looper exactly how YOU want it. Or even to build a MIDI controller and forget about the looping aspect.

Just to name one of its highlights: it's THE ONLY looper around allowing you to create a pre-thought song structure in which the recording of the various instruments punch in and out without you having to push any buttons at all (ala the disappeared zenAud.io ALK). Quoting their ancient slogan: Looper meets sequencer.

Or...using A Tasty Pixel's own description: Loopy Pro: Looper DAW Sampler.