August Smart Lock 2nd Gen Silver
Score: 72/100
Ultraloq U-Bolt
Score: 85/100Rankings
The Ultraloq U-Bolt Pro is a versatile, Grade 1 certified smart deadbolt featuring built-in WiFi and an impressive 8-in-1 entry method suite. Its main trade-offs are the high battery consumption from WiFi connectivity and the limitation to 2.4GHz networks. It is ideal for tech-savvy homeowners and Airbnb hosts who need robust remote access and door-ajar alerts.
The August Home Smart Lock 2nd Generation is a retrofit smart lock that fits on the interior side of most single-cylinder deadbolts, preserving the existing key while adding app-based control. It requires a separate Wi-Fi bridge for remote access, which is a notable trade-off for users wanting immediate out-of-the-box connectivity. It is best suited for Apple HomeKit users and renters who want a non-destructive smart lock upgrade.
| Attribute | | |
|---|---|---|
6 monthsbest | 4.5 months | |
— | 40 mmbest | |
— | 60 mmbest | |
— | -20 °Cbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Connectivity & Smart Home(2) | ||
Smart Home Compatibility | Apple HomeKit, Alexa, Google Assistant | Alexa, Google Assistant, SmartThings, IFTTT |
Voice Assistant Support | Siri, Alexa, Google Assistant | Alexa, Google Assistant |
Access & Security(3) | ||
Encryption Standard | AES | 128-bit AES |
Unlock Methods | App, Voice, Physical Key, Bluetooth | App, Fingerprint, Keypad, NFC, Physical Key, Voice, Web Portal |
Alarms | true | |
Durability & Environment(2) | ||
IP Rating | IP65 | |
Operating Temperature (°C) | °C | -20 to 65 °C |
Power & Battery(3) | ||
Battery Life (months) | 6 months | 3-6 months |
Power Source | AAA Batteries | 8x AA Alkaline |
Low Battery Indicator | true | |
Physical & Installation(4) | ||
Door Thickness Compatibility (mm) | mm | 35-45 mm |
Backset (mm) | mm | 60 or 70 mm |
Lock Type | Retrofit | Deadbolt |
Installation Type | Retrofit | DIY No-Drill |
Support & Service(1) | ||
Warranty | 1 | 1.5 |
Products in the top-left offer the best value (high score, low price).
Professional reviewers stress the lock's easy, non-destructive installation, its retention of the original key, and its broad smart-home ecosystem support, especially HomeKit.
Everyday users highlight the convenience of eliminating key fumbling, the usefulness of virtual guest keys, and the peace of mind provided by activity logs.
“Engineering excellence”
TechHive and the Ultraloq community praise the U-Bolt Pro for its healthy facelift and improved auto-unlock geofencing over previous models. Reviewers highlight the configurable auto-lock feature using the door sensor and the plentiful features that balance security with convenience. The product is considered a flagship for user-friendliness, particularly due to its built-in WiFi, Bluetooth, and door sensor capabilities that fit standard doors with a quick, no-drill install.
Everyday users generally praise the simple app navigation, reliable remote control, and door alerts. There is strong appreciation for the IP65 durability and BHMA certification, which contribute to a sense of security. Users value the versatility of having multiple entry methods like fingerprint, app, and keypad. While complaints are scarce, some users note the limitation of WiFi-only connectivity and potential battery life concerns.
