Average score
Product 1: eufy Video Smart Lock S330
4.1
Product 2: Lockly Visage Zeno Series Smart...
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: Lockly Visage Zeno Series Smart...
4.0

Access logs and history views are available in-app, though one reviewer noted multiple log views can be confusing rather than helpful.

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: Lockly Visage Zeno Series Smart...
3.7

Lockly Home offers a cleaner interface than older Lockly apps, but setup and navigation still feel uneven, with some settings hard to find and occasional crashes or quirks reported.

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: Lockly Visage Zeno Series Smart...
4.0

Auto-lock is configurable and works well when the door and strike are well-aligned, but some reports suggest it can fail or beep if the deadbolt does not slide smoothly. Facial recognition auto-unlock is the headline feature and is widely described as fast, reliable, and hard to spoof, working in bright sun, low light, and with sunglasses in most tests.

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: Lockly Visage Zeno Series Smart...
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: Lockly Visage Zeno Series Smart...
4.5

Backset appears adjustable for common 2 3/8-inch and 2 3/4-inch configurations, as shown in installation guidance.

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: Lockly Visage Zeno Series Smart...
4.1

Rechargeable battery packs (often with a spare included) reduce downtime, but real-world longevity varies by settings like always-on face scanning and Wi-Fi usage, ranging from weeks in max scanning mode to months with power saving.

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: Lockly Visage Zeno Series Smart...
3.8

Bluetooth is required for initial setup and enrolling faces/fingerprints; it usually works, though some reviewers reported short connection windows or limited range (and noted the use of older Bluetooth versions).

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: Lockly Visage Zeno Series Smart...
4.4

Build quality is often described as sturdy and premium (zinc alloy and a substantial feel), even when reviewers disagree about the aesthetics or bulk.

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: Lockly Visage Zeno Series Smart...
3.5

The included wired door-sense/contact sensor is accurate but often criticized for looking inelegant and adding extra wiring; some users wish it were built-in or removable.

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: Lockly Visage Zeno Series Smart...
3.9

Door compatibility is typical for a full deadbolt swap, but the lock performs best when the door closes cleanly and the bolt slides smoothly into the strike.

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: Lockly Visage Zeno Series Smart...
4.1

It installs as a standard deadbolt replacement, and some reviewers noted they could reuse existing cutouts or sensor placements from prior locks, reducing additional door work.

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: Lockly Visage Zeno Series Smart...
3.8

Several reviewers referenced firmware/app updates (or promised updates) aimed at improving setup reliability and usability, suggesting the experience can change over time.

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: Lockly Visage Zeno Series Smart...
4.3

Fingerprint unlock is typically quick and accurate, though at least one reviewer found it hit-or-miss depending on finger angle and the scanner’s placement.

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: Lockly Visage Zeno Series Smart...
4.2

Guest access is robust, including multiple user PINs, time-restricted or one-time codes, and in some cases offline codes or shared digital keys depending on platform.

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: Lockly Visage Zeno Series Smart...
4.5

The Visage’s built-in Wi-Fi means no separate hub is required, a clear upgrade over older hub-dependent smart locks.

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: Lockly Visage Zeno Series Smart...
3.9

Installation is generally DIY-friendly with good templates and guides, but several reviewers said the process can be lengthy and cable management inside the housing can be frustrating.

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: Lockly Visage Zeno Series Smart...
4.0

Jam detection/alerts are mentioned as part of the notification set, allowing you to be warned if the lock reports a jam or locking issue.

Key override reliability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Visage Zeno Series Smart...
4.1

Backup entry options include a physical key and a USB-C emergency power port, which reviewers view as important failsafes.

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: Lockly Visage Zeno Series Smart...
4.3

The PIN Genie keypad improves security by shuffling digits, but it can slow entry and increase mistakes compared with a normal keypad.

Keyway quality
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Visage Zeno Series Smart...
3.9

The key cylinder is rekeyable (noted as a 5-pin style in some videos), though rekeying may take extra time due to seals and screws.

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: Lockly Visage Zeno Series Smart...
4.6

Unlock speed is frequently described as near-instant for face and fingerprint (around 1–2 seconds), while keypad entry is slower due to the shuffled layout.

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: Lockly Visage Zeno Series Smart...
4.0

Motor noise is still present, but at least one reviewer noted it is noticeably quieter than older Lockly models.

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: Lockly Visage Zeno Series Smart...
4.5

Day-to-day locking reliability is mostly strong, especially for face unlock, though a minority of reviewers mention occasional Wi-Fi/app reliability issues or mechanical smoothness sensitivities.

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: Lockly Visage Zeno Series Smart...
3.8

Notifications are flexible (lock/unlock, auto-lock, and sometimes jam alerts), but they can be noisy, leading some users to dial them back or disable duplicates across apps.

Physical attack resistance
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Visage Zeno Series Smart...
3.6

Physical security is described as solid, with references to ANSI Level 2 requirements, though at least one review noted the lock may not be formally certified, making it harder to validate beyond manufacturer claims.

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: Lockly Visage Zeno Series Smart...
4.1

Remote access via Wi-Fi/app is generally quick for lock/unlock and status checks, but some reviewers experienced occasional remote unavailability during testing.

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: Lockly Visage Zeno Series Smart...
4.3

Security is reinforced by 3D facial scanning that resists photo spoofing, encrypted data handling claims, and the PIN Genie keypad design that reduces shoulder-surfing risk.

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: Lockly Visage Zeno Series Smart...
4.5

Integration is a major strength, with support for Apple Home/Home Key plus Alexa and Google; reviewers generally found commands and automations responsive once set up.

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: Lockly Visage Zeno Series Smart...
4.4

The touchscreen is used for PIN entry and Home Key tapping; reviewers generally describe it as responsive and easy to read.

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: Lockly Visage Zeno Series Smart...
4.0

User management is a strong point, with support for multiple users and methods (faces, fingerprints, PINs), though some reviewers found the workflow confusing at first until updates improved it.

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: Lockly Visage Zeno Series Smart...
3.7

At roughly $349, it sits at the premium end; many reviewers feel the feature set earns the price, while others think it is hard to justify without built-in video doorbell functionality.

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: Lockly Visage Zeno Series Smart...
4.2

Voice control works with Alexa, Google, and Siri (via Apple Home), and reviewers commonly reported responsive lock/unlock commands and routine support.

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: Lockly Visage Zeno Series Smart...
4.3

Weather protection is positioned as strong, with an IPX5 rating cited and settings like Rain mode intended to prevent false keypad triggers.

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: Lockly Visage Zeno Series Smart...
3.9

Built-in 2.4GHz Wi-Fi enables remote control without a hub, but a few reviewers saw intermittent connectivity or early firmware hiccups; power-saving modes can reduce Wi-Fi use to extend battery life.