rabbit.reviews
Best Retrofit (No Locksmith Needed)

August Smart Lock (4th Gen)

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.

$80-$130
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
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)
Why we recommend it

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.

Reddit user (r/Locksmith)

I like the August lock you can put a real dead bolt on there and still get the ease of use of a smart lock.