"Offers every smart lock feature on paper for a price that guarantees compromises."
Four unlocking methods for under $80 means the budget was allocated to feature-rich electronics, leaving very little for the actual physical security components of the lock itself.
This product is for low-security interior doors, such as a home office or pantry, where the primary goal is keyless convenience, not robust security. The extremely low price is the main appeal for users willing to accept the significant risks of an uncertified device.
Anyone needing to secure a primary entry point to a home or apartment should not buy this. The combination of an unrated physical lock, an unknown software provider, and a non-existent brand reputation presents an unacceptable security risk.