Yale
Yale Assure Lock 2
$239.99
Released 2022
Best Smart Locks · head-to-head
Yale Assure Lock 2 vs Ultraloq U-Bolt Pro WiFi
A sourced, side-by-side comparison. Ultraloq U-Bolt Pro WiFi is cheaper at $179.99. Every spec and price links to its source.
Ultraloq
Ultraloq U-Bolt Pro WiFi
$179.99Cheaper
Released 2021
Which is better: the Yale Assure Lock 2 or Ultraloq U-Bolt Pro WiFi?
On the specs we track, they're closely matched. The Ultraloq U-Bolt Pro WiFi is the cheaper at $179.99.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Yale Assure Lock 2 | Ultraloq U-Bolt Pro WiFi |
|---|---|---|
| US price | $239.99 | $179.99 |
| Brand | Yale | Ultraloq |
| Released | 2022 | 2021 |
| Unlock methods | touchscreen keypad, smartphone app, Apple Home Key (NFC tap on iPhone/Apple Watch), physical key (on keyed models), voice assistant (Alexa/Google) | fingerprint (100 fingerprints, 0.3s recognition), keypad PIN (up to 50 codes), smartphone app (iOS/Android), Apple Watch, auto-unlock (geofence), physical key override |
| Connectivity | Wi-Fi built-in (premium SKU), Bluetooth, Z-Wave Plus module (optional, $80 add-on) | Wi-Fi 2.4GHz 802.11 b/g/n built-in, Bluetooth; also available in Z-Wave Plus and Matter over Thread variants |
| Matter | No | No |
| Auto lock | Yes | Yes |
| Battery type | 4× AA (9V terminal for emergency backup) | 4× AA (alkaline or lithium) |
| Finish options | Matte Black, Satin Nickel, Bronze | Matte Black, Satin Nickel (inferred from product line; specific finishes not enumerated on page accessed) |
| Install type | Replaces existing deadbolt — single-bore door | Replaces existing deadbolt — single-bore 2-1/8" door, DIY 4-screw install |
| Release | 2022 | 2021 |
Sources — Yale Assure Lock 2: digitaltrends.com (verified 2026-06-15). Ultraloq U-Bolt Pro WiFi: u-tec.com (verified 2026-06-15).
What's the difference between the Yale Assure Lock 2 and Ultraloq U-Bolt Pro WiFi?
Where the two actually differ on the specs we track (5 of 7). Matching specs are omitted.
- Unlock methods: Yale Assure Lock 2 touchscreen keypad, smartphone app, Apple Home Key (NFC tap on iPhone/Apple Watch), physical key (on keyed models), voice assistant (Alexa/Google) vs Ultraloq U-Bolt Pro WiFi fingerprint (100 fingerprints, 0.3s recognition), keypad PIN (up to 50 codes), smartphone app (iOS/Android), Apple Watch, auto-unlock (geofence), physical key override
- Connectivity: Yale Assure Lock 2 Wi-Fi built-in (premium SKU), Bluetooth, Z-Wave Plus module (optional, $80 add-on) vs Ultraloq U-Bolt Pro WiFi Wi-Fi 2.4GHz 802.11 b/g/n built-in, Bluetooth; also available in Z-Wave Plus and Matter over Thread variants
- Battery type: Yale Assure Lock 2 4× AA (9V terminal for emergency backup) vs Ultraloq U-Bolt Pro WiFi 4× AA (alkaline or lithium)
- Finish options: Yale Assure Lock 2 Matte Black, Satin Nickel, Bronze vs Ultraloq U-Bolt Pro WiFi Matte Black, Satin Nickel (inferred from product line; specific finishes not enumerated on page accessed)
- Install type: Yale Assure Lock 2 Replaces existing deadbolt — single-bore door vs Ultraloq U-Bolt Pro WiFi Replaces existing deadbolt — single-bore 2-1/8" door, DIY 4-screw install
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Yale Assure Lock 2
Four whitelisted testers (Engadget, TechRadar, Tom's Guide, TechHive) hands-on-tested the Yale Assure Lock 2 (across keypad/touchscreen and Wi-Fi configurations) and all recommend it as a good-looking, reliable smart deadbolt with broad smart-home support. The most common gripes are the dated, buggy Yale Access app (TechRadar, TechHive) and an installation that can need careful attention (TechRadar, Engadget). Tom's Guide separately dinged the lack of fingerprint or tap-to-unlock. Consumer Reports and retailer reviews were excluded. (4 sourced reviews, 4 lab-tested.)
Praised: Attractive, compact design (about 30% smaller inside than the original); Reliable everyday locking and unlocking in testing; Broad smart-home support (Alexa, Google, HomeKit, plus Wi-Fi/Z-Wave/Matter modules).
Flagged: Dated, buggy Yale Access app (crashes, no battery indicator); Installation can need careful attention (~30 min, occasional troubleshooting); No fingerprint or tap-to-unlock; must press Yale logo first to use the pad.
Ultraloq U-Bolt Pro WiFi
Two hands-on testers reviewed this exact model: TechHive (Christopher Null) and Reviewed/USA Today (Rick Broida). Both praise the fingerprint reader, easy installation, multiple entry methods, and built-in Wi-Fi that needs no separate bridge. Both flag the strict 2.4GHz-only Wi-Fi with no dual-band support. They split on Wi-Fi setup reliability: TechHive called the built-in Wi-Fi 'half-baked' after it refused to join a mesh network, while Reviewed's app connected in seconds. (2 sourced reviews, 2 lab-tested.)
Praised: Fingerprint reader is fast and reliable; Easy, tool-light installation (roughly 10-20 min deadbolt swap); Multiple entry methods with flexible user management.
Flagged: 2.4GHz-only Wi-Fi, no dual-band support; No Apple HomeKit or Amazon Key support; So-so battery life on 4 AA cells (3-6 months claimed).