Product arrived much faster than suggested, but the box was beat up (product within was fine) and the USB cable bag was empty (did not come with USB C cord). Carrying case is of good quality and the massage gun works as intended. The massage gun is quiet enough to have a normal conversation (maybe *slightly* raised voice, though I talk softly). There does seem to be a piece broken and rattling around in the cold / heat attachment, but the attachment heats and cools quickly... so besides the rattling, no harm nor foul.
Did take slightly longer than 2.5 hours to fully charge even from 2 of 4 bars showing full. Though it lasted long enough to be done with the session so at least it did the job and had plenty of charge leftover.
Have not used the app, but the tool itself works well ignoring the charge speed, missing usb c cable, and the hot / cold attachment rattling.