I used Nuki's Smart Lock Ultra for a year, and it changed how I think about smart home products

The Nuki Smart Lock Ultra earned strong marks after a year of use for easy installation, reliable performance, and a security-first design.

It stands out for privacy: no account is required, it uses end-to-end encryption, and it supports app control plus remote access.

The lock also works with major smart home ecosystems, including Google Home, HomeKit, Alexa, SmartThings, and Matter over Thread.

Main downsides are the premium price and a noticeably loud unlocking sound.