There aren't many reviews about this pedal, probably because most people don't want to risk their money on a pedal that has no reviews around, so here's a review.
It works exactly as a looper pedal is supposed to work. The reproduction of the sound is spot-on, it does not deviate from what you actually play on the guitar. It also doesn't generate any noise and it is a true by-pass.
The manual doesn't include the functions of this pedal, but they're the same ones every looper pedal of this mini type has. These are:
One tap to record, tap again to close the loop (starts repeating the recording). You can tap again if you want to add additional layers (over-dubs).
You can hold the button to delete the last layer you added, or double-tap to pause the reproduction. If you have paused the loop, then holding the button won't only delete the last layer, but the entire track. There's also this button in the center (LEVEL button), but I'm not sure what it actually does as I haven't experimented with it yet, but I'll definitely update the review once I try it.
The looper can take up to 15 minutes of total recorded time (that includes the over-dubs as well) and you can extract the audio files (WAV format) with a micro-USB, which is also included.
I honestly do not see a reason to go with the more expensive options. I'm totally satisfied by this looper as it does exactly what it is expected to do.