Best Smart Locks of 2026

A smart lock has one job: open for the right people, every time, without fuss. After six weeks across four models, the differences came down to reliability, battery life and how gracefully each one handles a dead battery or a dropped network.

How we tested

Every lock was fitted to a real exterior door and used as a household’s only entry for at least a week. We tracked failed unlocks, measured battery drain, yanked the Wi-Fi to test offline behaviour, and tried to defeat each one the lazy way a real intruder would — by attacking the door, not hacking the app.

The short version

The Aegis SmartLock Pro wins outright: it’s the most reliable, lasts about a year on a charge, and works with every smart-home platform thanks to Matter. Want to spend less? The Bolt Mini Keyless does the essentials for $119. If the priority is the lock’s physical toughness, the Grade 1 Fortress Deadbolt X is the pick. And renters who can’t swap hardware should look at the KeyGuard Retrofit, which fits over the deadbolt you already have.

A note on keys

Every lock here keeps a physical fallback — either your existing key or a bundled one. We’d steer you away from any “appless” lock that removes that escape hatch entirely; batteries die and phones run flat at the worst moments.