Side-by-side comparison based on expert reviews and community consensus.
August Smart Lock (4th Gen)
Best Retrofit (No Locksmith Needed)Yale Assure 2
Best OverallPrice
$80-$130
$150-$250
Summary
Fits over your existing deadbolt so your physical key still works — ideal for renters or anyone who doesn't want to replace their entire lock. Locksmiths love it for keeping real security hardware intact.
The most consistently recommended smart lock across Reddit communities. Reliable hardware, supports Matter/Z-Wave/Zigbee, and plays nicely with every major smart home platform.
Pros
- Installs over existing deadbolt in minutes — no new drilling
- Keeps your existing exterior lock and key fully functional
- Works with Alexa, Google Home, HomeKit, and SmartThings
- Auto-lock and auto-unlock via geofencing
- Supports Matter, Z-Wave, and Zigbee for broad ecosystem compatibility
- Works with Apple Home/HomeKit, Alexa, Google Home, and SmartThings
- Compact, sturdy build with excellent companion app
- Apple Home Key support for tap-to-unlock via Apple Watch
Cons
- Only controls the interior thumb turn — exterior keypad sold separately
- Bulkier interior design compared to full deadbolt replacements
- Wi-Fi Connect Bridge required for remote access (sold separately)
- Some configurations require a separate hub for Z-Wave/Zigbee
- Wi-Fi module may need to be purchased separately depending on variant
- Higher price point than budget alternatives
Our take
The locksmith community specifically recommends August because it lets you keep a quality deadbolt underneath. That's the right instinct — don't sacrifice your physical security for smart features.
If you only read one recommendation, it's this: the Yale Assure 2 is the community consensus pick, full stop. It's reliable, ecosystem-agnostic, and you won't regret it.
Buy
