Well, on the paper everything looks great, especially those "unlimited overdubs".
But unfortunately, overdubs don't work for me at all. They always start with some delay, some latency. Surely, I thought I am to blame here first as maybe I was playing out of tempo and/or using the pedal wrongly, but I tried to record metronome and compared the results which were the same. Basically, all overdubs start later than the actual main (first) loop. Then after a second or so they "catch up" to the rhythm/tempo. No matter if you start overdubbing in tempo of the first loop right at the start of the main loop, at its end, or even before (as overdub works perfectly fine that way too) - the result is always the same. So, unfortunately, unusable for me.
I've read somewhere that I should try to update the firmware, but unfortunately, there is no app to do so, and, most importantly, the pedal has no USB connection, so there is no way for me to do that.