Average score
Product 1: eufy Video Smart Lock S330
4.1
Product 2: Lockly Secure Plus Smart Lock
3.8
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 Secure Plus Smart Lock
4.5

Reviews highlight detailed event history in the app, with lock/unlock entries tied to user and method; one reviewer notes being able to review long windows of history for shared spaces.

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 Secure Plus Smart Lock
4.4

The Lockly app is generally described as clean and responsive for basic lock/unlock, logs, and settings, but some reviewers found PIN and guest workflows overly complicated compared with rivals.

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 Secure Plus Smart Lock
4.5

Auto-locking is widely praised and configurable (often cited in the 5–300 second range), helping the door re-secure itself without relying on habits.

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 Secure Plus Smart Lock
4.3

A lockout style safeguard is described that disables keypad input after too many failed attempts, reducing brute-force code guessing.

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 Secure Plus Smart Lock
No score yet
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 Secure Plus Smart Lock
4.4

Battery life is described as strong on four AA cells, and the external 9V jump option reduces the risk of lockouts when batteries die.

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 Secure Plus Smart Lock
4.2

Bluetooth performance is usually fast and stable for in-range control, though at least one review reports occasional trouble discovering the lock on some phones during setup.

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 Secure Plus Smart Lock
4.4

Multiple reviews describe the hardware as sturdy and premium, but also noticeably large and heavy compared with sleeker competitors.

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 Secure Plus Smart Lock
3.3

A door sensor is mentioned as an optional add-on to report open/closed state, but it is not consistently tested across reviews.

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 Secure Plus Smart Lock
3.8

Most reviewers report compatibility with standard doors, but at least one install required extra door prep (strike/side bracket work) and the weight can make alignment more sensitive.

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 Secure Plus Smart Lock
No score yet
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 Secure Plus 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: Lockly Secure Plus Smart Lock
4.7

The 3D fingerprint reader is repeatedly called fast and accurate; enrollment takes multiple scans but day-to-day unlocking is a standout convenience.

Finish durability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Secure Plus Smart Lock
4.6

One review cites strong finish coverage, including a lifetime warranty on exterior finishes, supporting long-term cosmetic durability expectations.

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 Secure Plus Smart Lock
4.2

Access sharing is a strength: reviews mention temporary, scheduled, one-time, offline codes, and app-based sharing options; however, some find the onboarding and messaging flow confusing for casual guests.

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 Secure Plus Smart Lock
2.4

Out of the box the lock is Bluetooth-first, and multiple reviews note that a separate Wi-Fi hub is needed for remote control and voice assistants.

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 Secure Plus Smart Lock
3.8

Installation experiences vary from quick (around 15 minutes) to frustrating; the app guidance helps, but the heavy hardware and documentation can make assembly and alignment harder than average.

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 Secure Plus Smart Lock
No score yet
Key override reliability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Secure Plus Smart Lock
4.3

Backup entry options are well covered, with a traditional key cylinder and an exterior 9V jump-power method noted for dead batteries.

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 Secure Plus Smart Lock
4.5

The PIN Genie keypad that shuffles digit positions is consistently praised for improving code privacy, though a reviewer notes it can feel disorienting for people who remember codes by shape.

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 Secure Plus Smart Lock
4.5

Lock/unlock actions are commonly described as quick, including near-instant app commands within Bluetooth range and a few-second mechanical cycle.

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 Secure Plus Smart Lock
4.6

Motor operation is described as relatively quiet compared with typical smart deadbolts.

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 Secure Plus Smart Lock
3.7

Most reviews describe solid day-to-day operation, but one outlet reports calibration/status mismatches that made locked vs unlocked reporting unreliable in their testing.

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 Secure Plus Smart Lock
1.5

Push notifications are specifically called out as missing versus competing smart locks.

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 Secure Plus Smart Lock
2.5

Remote locking/unlocking is not available without the optional Wi-Fi hub; with the hub, reviews describe convenient anywhere access through the app.

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 Secure Plus Smart Lock
4.6

Security is a core theme: reviewers cite AES256/BLE security claims, the PIN-shuffling keypad, biometric anti-spoofing, lockout behavior, and privacy mode style controls.

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 Secure Plus Smart Lock
2.1

Smart-home integration is limited without accessories; Alexa and Google support is tied to the Wi-Fi hub, while HomeKit, Matter, Thread, and IFTTT-style automation are repeatedly noted as absent or limited.

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 Secure Plus Smart Lock
4.5

The touchscreen is generally responsive and easy to read, but its glossy surface can show fingerprints; its main value is supporting the dynamic PIN layout.

Two-factor authentication availability
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Secure Plus Smart Lock
4.0

At least one review describes multi-step account or device activation verification (codes via SMS and email), indicating stronger account protection than many simple Bluetooth locks.

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 Secure Plus Smart Lock
4.2

User and guest management is feature-rich, offering multiple access types and schedules, but the depth can feel like overkill and harder to administer for short-term visitors.

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 Secure Plus Smart Lock
2.7

Value is the most common knock: reviewers call it expensive for a Bluetooth-first lock, especially once the Wi-Fi hub accessory is added.

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 Secure Plus Smart Lock
2.4

Voice control is not native; Alexa and Google voice commands are described as available only when paired with the Wi-Fi hub.

Warranty and support
Product 1: eufy Video Smart Lock S330
No score yet
Product 2: Lockly Secure Plus Smart Lock
4.6

Warranty coverage is described as strong (including finish and electronics coverage), but reviewers also flag usability and setup complexity as an area needing improvement.

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 Secure Plus Smart Lock
4.5

One review explicitly praises weather toughness across extreme temperatures, suggesting good outdoor suitability when installed correctly.

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 Secure Plus Smart Lock
2.3

There is no built-in Wi-Fi in the base lock; Wi-Fi connectivity is achieved through an add-on hub or bundled variant, which affects total cost and complexity.