Average score
Product 1: eufy Video Smart Lock S330
4.1
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.1
Access logs
Product 1: eufy Video Smart Lock S330
4.7

Access/activity logging is a practical strength in real use: reviewers mention seeing who unlocked/locked and, in some cases, which fingerprint/user performed the action.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

Logs are generally described as robust, showing an activity timeline that can identify lock events and, in many cases, which method or user was involved. One review notes that actions initiated through certain integrations can be labeled oddly in the timeline.

App
Product 1: eufy Video Smart Lock S330
4.4

The app is consistently described as clean and feature-rich, with detailed control over access, detection, notifications, and power modes. A recurring critique is that troubleshooting (especially calibration guidance) could be clearer, and some wanted phone-based tap/NFC unlock.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.2

The U home app is often described as easy to navigate for users, codes, and basic settings, but experiences are inconsistent. Multiple reviewers report setup quirks or occasional failures to connect/control the lock, while others report smooth day-to-day control.

Auto-lock
Product 1: eufy Video Smart Lock S330
4.2

Auto-lock is commonly praised for peace of mind and flexibility (including short delays and schedules). Some reviewers cautioned that auto-lock can be risky if your door isn’t reliably closed/aligned or if door state detection is imperfect.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.2

Auto-lock is widely praised when configured, especially when paired with the door sensor to confirm the door is closed, and timing controls are commonly cited. However, at least one reviewer reports software trouble enabling auto-lock reliably. Hands-free unlocking is available via phone location and short-range connectivity, and some reviewers like it as a Home Key alternative. Others report it can be slow or inconsistent and choose to leave it disabled.

Auto-relock after failed attempts
Product 1: eufy Video Smart Lock S330
4.3

Wrong-try protections are commonly described (lockdown/timeouts after multiple incorrect entries), helping reduce brute-force attempts and adding practical security beyond basic PIN entry.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
No score yet
Backset compatibility
Product 1: eufy Video Smart Lock S330
4.5

Backset support is described as adjustable to common sizes (2 3/8 in and 2 3/4 in), which helps it fit typical deadbolt door prep.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.8

Backset adjustment is described as supported via an adjustable bolt/latch, helping it fit common door configurations without special work.

Battery
Product 1: eufy Video Smart Lock S330
4.4

Battery life is a highlight: the 10,000mAh rechargeable pack is repeatedly described as lasting months, with long-term users charging only a few times per year when tuned (for example, human-only motion). Charging can take hours and you may need to supply your own USB-C power gear.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.1

The lock uses eight AA batteries, with reviewers commonly citing a target of roughly a year of life, and noting that heavy Wi-Fi usage can increase drain. Some reviewers prefer rechargeable systems, but most appreciate that AAs are easy to replace.

Bluetooth
Product 1: eufy Video Smart Lock S330
4.1

Bluetooth is commonly mentioned as part of the lock-to-bridge communication path. Reviewers generally describe it as functional, primarily as an invisible link in the overall system.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

Bluetooth is commonly used for local control and platform pairing; it is generally responsive, but some reviewers note Bluetooth-based control in certain ecosystems can feel slower at times.

Build quality and durability
Product 1: eufy Video Smart Lock S330
4.4

Build quality is widely described as heavy-duty and mostly metal, but it is also frequently called large/bulky. One expert review wanted a bit more robustness to make it an easy, universal recommendation.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

Build quality is frequently described as solid, with metal components and sturdy feel, though aesthetics are divisive. Some versions use more plastic on the face, which can look cheaper even if it does not feel flimsy.

Door-sense
Product 1: eufy Video Smart Lock S330
2.5

Door state awareness appears mixed: at least one reviewer warned the lock may not reliably know whether the door is open or closed, which matters if you rely heavily on auto-lock behaviors.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

The optional door sensor is repeatedly recommended because it enables door-open/ajar awareness, supports smarter auto-lock behavior, and can trigger alerts when a door is left open. Some note it is not always exposed to every smart-home platform the same way.

Door compatibility (deadbolt fit)
Product 1: eufy Video Smart Lock S330
3.4

Door fit is usually straightforward, but some doors may need extra attention: shallow strike-plate depth can trigger calibration failures, and tight tolerances mean misalignment can prevent reliable locking.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.5

Multiple reviewers describe the lock as fitting most standard U.S. doors as a full deadbolt replacement. Compatibility is generally not a blocker when replacing an existing deadbolt.

Existing hardware reuse
Product 1: eufy Video Smart Lock S330
4.2

At least one installation guide notes you may be able to reuse existing deadbolt hardware if it fits flush, reducing the need to replace every component.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.8

Some installers successfully reuse existing hardware like a strike plate, but at least one reviewer found that trying to reuse parts slowed installation. Using the included hardware is often suggested for the smoothest setup.

Feature additions via updates
Product 1: eufy Video Smart Lock S330
4.5

At least one long-term reviewer highlighted meaningful feature additions via updates, such as unlocking directly from a live-view screen on supported cameras, improving day-to-day usability.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
No score yet
Fingerprint
Product 1: eufy Video Smart Lock S330
4.4

Fingerprint performance is polarizing: several owners describe it as among the fastest and most accurate they have used, while one expert reviewer struggled with repeated reads and wished for clearer activation feedback (lighting).

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.6

Fingerprint performance is one of the strongest themes: reviewers repeatedly describe it as fast, accurate, and reliable, often unlocking in under a second. A few note occasional misses can be improved by enrolling the same finger more than once.

Finish durability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.4

Several reviewers highlight that the printed/illuminated keypad markings and button materials are designed to resist obvious wear, reducing the chance that frequently used digits become visibly obvious over time. Long-term finish wear is not broadly tested.

Geofencing
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.0

Geofencing-based behavior is available and can work well, but reviewers disagree on reliability and speed. Some appreciate the convenience, while others find it slow or prefer not to share location continuously.

Guest Codes and Access
Product 1: eufy Video Smart Lock S330
4.4

Guest access options are robust, including temporary or scheduled PIN codes and app-based access. Scramble passcode and other convenience/security options are frequently cited.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.7

Guest access is described as flexible, with support for one-time, scheduled, recurring, and time-bounded PIN codes. Reviewers frequently cite this as a practical advantage for visitors, neighbors, cleaners, and deliveries.

Hub requirement
Product 1: eufy Video Smart Lock S330
4.0

The required plug-in chime/bridge is a core part of the experience: it enables remote connectivity and local storage, and many liked having a loud indoor chime. Downsides include extra setup steps and needing to provide your own microSD card.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.0

Hub needs depend on ecosystem and model. Some versions are described as not needing a dedicated hub for standard smart features, while Apple Home/Matter remote control can depend on a compatible hub or adapter depending on configuration.

Installation and Setup
Product 1: eufy Video Smart Lock S330
4.2

Most reviewers found installation similar to other full deadbolt replacements and generally manageable, but a few called out real-world friction: needing a second set of hands, long firmware updates, and careful mechanical alignment to avoid errors or motor strain.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

Physical installation is commonly described as quick and straightforward for a full deadbolt replacement, often taking only a few minutes for experienced installers. Software setup and platform pairing are more variable, with some reviewers reporting repeated connection or onboarding friction.

Jam detection
Product 1: eufy Video Smart Lock S330
2.8

Calibration and error states can present as jam-related warnings in the app for some installs, even when the deadbolt feels physically secure, creating nuisance alerts rather than true mechanical jams.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
No score yet
Key override reliability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.5

Key override is consistently presented as a usable backup method, and reviewers treat it as a standard fail-safe alongside digital access. Detailed long-term reliability testing is not common in the reviews.

Keypad
Product 1: eufy Video Smart Lock S330
4.2

The keypad is generally considered easy and reliable for daily use, with extra security options like scramble passcodes. One reviewer noted occasional wake-up/tap sensitivity issues before the keypad became responsive.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.5

The keypad is widely liked for being tactile and easy for guests, with an anti-peep approach that allows extra digits before or after the real PIN. It is generally described as responsive and useful when fingerprints are not ideal.

Keyway quality
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
2.8

One security-focused review points out an unusual mechanical cylinder/keyway presentation that may be confusing from a traditional lock perspective. This is not raised as an issue by typical user reviews focused on daily usability.

Lock/unlock speed
Product 1: eufy Video Smart Lock S330
4.7

When the biometric reader works well, unlocks are described as extremely fast. However, experiences vary: some testers reported repeated attempts needed on the fingerprint sensor, while others called operation instant and consistent.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.4

Lock/unlock actions are often described as quick, including near-instant response to app commands in some tests. Others note slower response in some integration paths or platforms, particularly when relying on certain network/control routes.

Locking motor
Product 1: eufy Video Smart Lock S330
4.2

The motor is sensitive to resistance: if the deadbolt/strike alignment is off, reviewers warned the motor may struggle or fail to complete a lock cycle. With good alignment, long-term users reported stable performance.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.2

Motor behavior is polarizing: some reviewers do not call out noise at all, while others describe the motor as grinding, whining, or too loud for regular home use. This appears to vary by version and subjective tolerance.

Locking reliability
Product 1: eufy Video Smart Lock S330
4.2

Locking reliability is strong for many owners (including long-term use), but it is not universally flawless. Reported weak spots include finicky alignment/calibration states and occasional inconsistencies with certain external controls (like one-touch locking).

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.5

Core locking reliability is generally reported as strong, with consistent success across fingerprint and keypad entry. When reliability issues appear, they are more often tied to connectivity, app control, or ecosystem integration rather than the physical bolt failing to actuate.

Notifications
Product 1: eufy Video Smart Lock S330
4.1

Notifications are configurable and usually fast, but not perfect: a few reviewers saw delayed starts to recorded events, occasional missed motion/loitering triggers, or tradeoffs between faster alerts vs alerts that include thumbnails.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.2

Notifications are frequently highlighted as useful, including alerts for lock/unlock events, specific user activity, and door-left-open states when the door sensor is used. Some reviewers appreciate fine-grained control over which alerts to receive.

Physical attack resistance
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.4

Security-focused commentary includes claims of strong overall security ratings on some variants and at least one discussion of strong bump resistance in the mechanical cylinder. However, in-depth, standardized attack testing is not consistently provided across reviews.

Pick/drill resistance (if rated)
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
2.8

One lockpicking-focused review suggests the mechanical cylinder does not showcase especially impressive anti-pick measures, even while noting strong bump resistance. Drilling resistance is not meaningfully assessed in these reviews.

Remote access
Product 1: eufy Video Smart Lock S330
4.5

Remote access is repeatedly described as convenient and reliable, including locking/unlocking from anywhere and checking lock status. Several reviewers highlighted using it for guests, contractors, or deliveries.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.4

Remote access depends heavily on model and setup: some Wi-Fi versions are intended to provide remote control directly, while Matter/HomeKit remote control can require a compatible hub or additional adapter. Several reviewers report inconsistent remote reachability when the lock drops offline.

Security features (encryption)
Product 1: eufy Video Smart Lock S330
4.0

Security and privacy discussion centers on local storage and app behavior; one reviewer noted an on-screen encryption message before video streams to the bridge. Overall, the product is framed as privacy-leaning due to non-subscription local storage, with some mention of broader brand scrutiny.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
No score yet
Smart-home integration (Alexa, Google, Siri, HomeKit, Matter, Thread)
Product 1: eufy Video Smart Lock S330
3.4

Smart-home integration is limited compared to ecosystems that prioritize Apple: reviewers consistently note Alexa and Google support, but no Apple HomeKit, Matter, or IFTTT.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.6

Smart-home compatibility is repeatedly cited as a major strength, spanning popular ecosystems (including Apple Home/HomeKit, Alexa, Google, and, on some variants, Matter). A recurring caveat is that certain advanced features may still require the manufacturer app, and responsiveness can vary by platform.

Touchscreen
Product 1: eufy Video Smart Lock S330
4.0

Touch controls are usually described as responsive and backlit, but at least one expert review reported needing multiple taps to wake the dark touchscreen at times.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
No score yet
User access management
Product 1: eufy Video Smart Lock S330
4.3

User management is broadly praised, including multiple users, fingerprints, and configurable access windows. Reviewers emphasized that it’s easy to add or adjust access in the app.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.6

User management is described as flexible, supporting multiple user roles, schedules, and access methods per user (PIN, fingerprint, app). Reviewers routinely point to this as a standout for families and service-provider access.

Value and Price
Product 1: eufy Video Smart Lock S330
4.0

Value is framed as strongest when the price is closer to the low-to-mid $300s, since it combines multiple devices and includes the chime/bridge. At full price near $400, reviewers still call it feature-rich, but expectations rise for perfect reliability and broad ecosystem support.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.6

Pricing is commonly described as on the expensive side for a smart lock, but some reviewers feel the access flexibility and ecosystem support justify it. Value perception drops when reviewers encounter connectivity problems, missing built-in Wi-Fi on certain variants, or loud motor noise.

Voice control
Product 1: eufy Video Smart Lock S330
4.1

Voice control works through Alexa and Google Assistant in supported setups, including lock/unlock commands and, in at least one review, routines tied to doorbell events.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.3

Voice control is generally described as working well once paired to an assistant ecosystem, including voice-triggered locking/unlocking flows. A few reports mention occasional assistant-side command failures when the lock is not responding reliably.

Warranty and support
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.8

Support experiences are not deeply covered, but at least one reviewer reports contacting the company about Wi-Fi/app issues and receiving acknowledgment and escalation. Clear resolution timelines or outcomes are not broadly documented.

Weather resistance
Product 1: eufy Video Smart Lock S330
4.5

Weather resistance is presented as strong on paper (including an IP65 rating in one review), and no reviewer reported weather-related failures in the provided transcripts.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
4.5

Weather resistance is repeatedly associated with an IP65-style rating and suitability for outdoor exposure like rain and dust. Long-term durability in harsh conditions is not extensively tested in the reviews.

Wi-Fi
Product 1: eufy Video Smart Lock S330
3.9

Wi-Fi is tied to the required bridge and is noted as 2.4GHz in at least one expert review. In general, connectivity is described as stable, with one review calling out distance guidance between lock, chime/bridge, and router.

Product 2: ULTRALOQ Bolt Fingerprint Smart Lock
3.8

Wi-Fi behavior varies by model and experience: some versions are described as having built-in Wi-Fi, while at least one Matter-focused review states Wi-Fi is not integrated and may require an extra adapter. Some users also report Wi-Fi dropouts that make remote access unreliable.