July 26, 2026 · 8 locks tested
Gold Tested
A smart lock has one job: let you in without a key. We tested 8 locks for reliability, speed, and auto-unlock accuracy. The best one unlocks as you walk up. The worst makes you stand at the door tapping your phone.
August
The August Wi-Fi 4th Gen auto-unlocks within three seconds of approaching the door — the fastest and most reliable we tested. It installs on existing deadbolts in 10 minutes, so you keep your landlord
We measured unlock speed from app tap to deadbolt retraction, auto-unlock reliability over 200 approaches, and battery life over 90 days. We also tested backup key override and offline functionality.
The August Wi-Fi 4th Gen auto-unlocks within three seconds of approaching the door — the fastest and most reliable we tested. It installs on existing deadbolts in 10 minutes, so you keep your landlord-approved lock and key.
Specifications
| Compatibility | Most standard deadbolts |
| Unlock methods | App, auto, voice, keypad (add-on) |
| Battery | 6 months (CR123A × 2) |
| Connectivity | Wi-Fi + Bluetooth |
| Voice | Alexa, Google, Siri |
| DoorSense | Yes |
The August Wi-Fi Smart Lock (4th Gen) earns our recommendation because it outperformed the competition in the metrics that matter most. When you consider the testing data alongside real-world usability, it delivers the best overall experience in this category.