Rankings
The Ultraloq U-Bolt Pro combines eight entry methods-including a 360° fingerprint sensor-with built-in 2.4 GHz Wi-Fi and an IP65-rated housing for robust outdoor use. Its battery life is shorter on Wi-Fi mode and the bulkier design can be challenging to install. Ideal for households seeking versatile biometric access and hub-free Wi-Fi control.
The Veise VE017 offers a fast fingerprint sensor, numerous unlock options, and solid build quality with an IP55 rating. Its drawbacks include vague battery-life specifications and limited third-party testing for long-term durability. Ideal for tech-savvy homeowners seeking an affordable, feature-rich smart deadbolt.
The August Wi-Fi Smart Lock (Dark Gray) offers built-in Wi-Fi, DoorSense and auto-lock features, delivering a full-featured retrofit experience. Its reliance on Wi-Fi and periodic battery changes can be limiting for homes with weak network coverage. Suited for single-cylinder deadbolt owners who want remote access and smart-home integration.
The August Wi-Fi Smart Lock (Silver) adds built-in Wi-Fi, DoorSense and voice-assistant control while preserving the original deadbolt. It lacks auto-lock and detailed battery-life information. Best for users who want a simple retrofit with remote access and don't need advanced automation.
The SimpliSafe Smart Lock Series 2 provides a fast, retrofit solution with Wi-Fi connectivity and auto-lock tied to the SimpliSafe security system. Its reliance on a SimpliSafe subscription and occasional Wi-Fi reliability issues limit its appeal to non-SimpliSafe users. Best for existing SimpliSafe customers seeking an inexpensive deadbolt upgrade.
The Yale Assure Lock 2 is a Grade 2 deadbolt with Wi-Fi and Bluetooth connectivity, offering remote access and auto-lock via the Yale Access app. It lacks built-in Z-Wave, biometric authentication, and Matter support, which may limit integration for some users. Best suited for tech-savvy homeowners who value Wi-Fi convenience and a physical key backup.
The Kucacci Smart Door Lock with Handle provides seven access methods, IP66 weatherproofing, and AES256 encryption for secure, versatile entry. It requires a separate Wi-Fi gateway and has an unspecified battery life, which can add complexity. Suitable for DIY installers and outdoor applications where durability and multiple authentication options are priorities.
The August Home Smart Lock 2nd Generation is a retrofit lock that adds HomeKit, Alexa, and Google Assistant voice control while preserving the existing deadbolt key. Its main limitation is the need for an optional Wi-Fi bridge for remote access and the lack of a built-in Wi-Fi module. Best for Apple HomeKit users and renters who want smart features without replacing the whole lock.
| Attribute | | | | | | | | |
|---|---|---|---|---|---|---|---|---|
| ↓ lower better | — | — | 10 minutes | 10 minutes | 10 minutes | — | 9 minutesbest | 10 minutes |
2 yearsbest | 1.5 years | 1 years | 1 years | — | 1 years | 1 years | 1 years | |
| ↓ lower better | 1,021 g | 1,497 g | 395 g | 453.6 g | 431 g | 453.6 g | 395 g | 180.9 gbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | | | | | | | |
|---|---|---|---|---|---|---|---|---|
Features(1) | ||||||||
Auto‑Lock | true | true | true | — | true | true | true | false |
Installation(1) | ||||||||
Installation Time (minutes) | 10-15 minutes | — | 10 minutes | 10 minutes | 10 minutes | — | 9 minutes | 10 minutes |
Battery & Power(1) | ||||||||
Battery Type | AA | AA alkaline | CR123 | — | AA, CR2450 | AA alkaline | AAA | CR123 |
Security(1) | ||||||||
Security Grade | — | Grade 1 | — | — | — | Grade 2 | — | — |
Connectivity(4) | ||||||||
Bluetooth Version | unknown | unknown | 4.0 | Yes | — | unknown | unknown | 4.0 |
Wi‑Fi Compatibility | true | true | true | true | true | true | false | true |
Wi‑Fi Standard | — | 802.11 b/g/n | 802.11 b/g/n | — | — | — | 2.4 GHz | 802.11 b/g/n |
Z‑Wave Support | — | true | false | — | — | false | — | false |
Fit & Design(3) | ||||||||
Weight (g) | 1021 g | 1497 g | 395 g | 453.6 g | 431 g | 453.6 g | 395 g | 180.9 g |
Material | — | — | — | — | — | Zinc | Metal | — |
Finish | Satin Nickel | — | Dark Gray | Black | Black | Black Suede | Silver | Silver |
General(3) | ||||||||
Warranty (years) | 2 years | 1.5 years | 1 years | 1 years | — | 1 years | 1 years | 1 years |
IP Rating | IP55 | IP65 | — | IP66 | IP65 | — | — | — |
Certifications | ANSI Grade 3, BHMA Certified | ANSI Commercial Grade 1 | — | — | — | RCM Compliant (AU), Prop 65: No | — | — |
Products in the top-left offer the best value (high score, low price).
Everyday users emphasize the quick and straightforward installation, the convenience of fingerprint and app access, and the reliability of the lock after setup. Praise centers on the value for money and the flexibility of multiple unlock methods, while no recurring complaints are noted in the available feedback.
Professional reviewers commend the Ultraloq U-Bolt Pro for its unmatched versatility, noting the eight entry methods, reliable 360° fingerprint sensor, and the convenience of built-in WiFi that removes the need for a hub. The lock's ANSI Grade 1 certification, IP65 rating, and integrated door sensor are highlighted as strong security and usability features. Criticisms focus on the WiFi's 2.4 GHz limitation, the relatively short battery life of the WiFi model, and occasional finicky setup, as well as the bulkier form factor that may not suit every door.
“impressive for a technological lock”
“keypad, biometrics, and auto-lock FTW”
“Easy to install with clear instructions and video.”
Choose Yale if battery longevity and a slimmer form factor are top priorities; choose Ultraloq for biometric entry and integrated door sensor.
Choose August if you need a platform-agnostic lock; choose SimpliSafe if you are already in the SimpliSafe ecosystem and want a quick, inexpensive retrofit.
Yale Assure is better for users seeking a full-replace lock with extensive integration, while SimpliSafe is ideal for quick upgrades within an existing SimpliSafe system.
Yale Assure is better for users willing to replace the whole lock and who want integrated Wi-Fi, but not ideal for renters needing a non-destructive retrofit.
Everyday users appreciate the easy installation, rapid fingerprint unlocking, and the ability to grant remote access to guests via eKeys. The door sensor's auto-lock function and the long-lasting AA batteries receive frequent praise. Common complaints revolve around fingerprint failures in wet or cold conditions, occasional app glitches during WiFi pairing, alignment challenges with the door sensor on warped doors, and a louder click compared with other smart locks.
Professional sources praise the August Wi-Fi Smart Lock for its effortless installation, robust security architecture, and extensive smart-home compatibility, describing it as a beautifully designed, powerful upgrade to the brand's lineup.
Everyday users love the quick install, reliable remote lock/unlock, activity logs, and the ability to share virtual keys, often highlighting the matte black aesthetic. However, they frequently complain about Wi-Fi drops, rapid battery depletion, occasional auto-unlock failures, integration quirks with some doors, and slow customer support.
Professional reviewers commend the SimpliSafe Smart Lock Series 2 for its low price, quick drill-free installation, and tight integration with SimpliSafe's monitoring service, especially the auto-lock triggered by system arming. However, they caution that the lock's value is heavily tied to a SimpliSafe subscription and its ecosystem lock-in, and they note the limited PIN length and occasional connectivity glitches as drawbacks compared with more platform-agnostic competitors.
Everyday owners consistently praise the lock's straightforward installation, attractive black finish, and reliable auto-lock functionality, while noting the need for a SimpliSafe subscription and occasional Wi-Fi issues.
Professional reviewers and product editors commend the Yale Assure Lock 2 for its easy retrofit installation, reliable Wi-Fi connectivity, and broad smart-home compatibility, noting its solid Grade 2 security rating and the convenience of built-in batteries and auto-unlock. However, they caution that users will need to purchase separate Z-Wave/Zigbee modules if those protocols are required, and they point out the absence of built-in biometric authentication and Matter support as drawbacks.
Everyday users generally appreciate the immediate usability provided by the included AA batteries, the seamless Alexa voice control, and the generous code-sharing capacity, especially for families and short-term rentals. Recurring themes include frustration with initial Wi-Fi setup and concerns about battery longevity, while the lack of a fingerprint sensor is noted by those seeking biometric access.
Professional reviewers and editors, primarily from August's own product pages, stress the lock's easy, non-destructive installation, its retention of the original key, and its broad smart-home ecosystem support, especially HomeKit. They position it as a straightforward upgrade for users who want smart functionality without replacing their existing deadbolt.
Everyday users highlight the convenience of eliminating key fumbling, the usefulness of virtual guest keys, and the peace of mind provided by activity logs. No major recurring complaints appear in the available data, though users note the need for a separate Wi-Fi bridge and periodic battery changes.
