I bought this to replace a U-Tec smart lock that failed (there are known problems with some of them), and am happy overall. This one's a bit larger than the old lock assembly, and the fingerprint reader is smaller and fails to read a fingerprint more often, but it's overall more reliable and looks fine on the door. Installation was cake, and the app is pretty good - it warns of low battery and does lots more.
So this product works great when I can get everything working properly but whenever I register a fingerprint (no matter how many access accounts I make) it won't work but the 1st day to like maybe 5 days tops. Lame. My thumb is always on my hand as opposed to my phone.