Average score
Product 1: Lockly Secure Plus Smart Lock
3.8
Product 2: Aqara Smart Lock U100
4.0
Access logs
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.1

Activity logs are a strong feature, showing who unlocked the door and by which method in many cases. One limitation noted is that HomeKit-related unlocks can appear as a generic HomeKit event rather than the exact method used.

Alarm/siren loudness (if included)
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
4.1

The lock provides audible chirps/voice prompts and a door-not-locked alarm, with adjustable volume levels and do-not-disturb options. Loudness is generally adequate for awareness rather than a full security siren.

App
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

The Aqara app provides deeper control than HomeKit (logs, codes, users, alerts, automations), and the UI is generally considered capable. Some reviewers dislike the firmware update flow, Bluetooth connection wait time, or needing to be near the lock for certain settings.

Auto-lock
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

Auto-lock is feature-rich (door-close sensing, timers, schedules, passage mode), and many find it convenient. However, some reviews label it beta and report occasional misfires or latch problems if calibration or door alignment is off. Auto-unlock behaviors are mainly achieved through automations (for example, location-based routines or ecosystem rules) rather than a pure hands-free proximity unlock. These can work well but may depend on hubs and platform security prompts.

Auto-relock after failed attempts
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.5

Failed-attempt lockout is widely described as effective: after multiple incorrect entries, the lock disables certain methods for up to about 30 minutes. This helps deter brute-force attempts and is often configurable.

Backset compatibility
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
4.5

Supports common backset sizing (2-3/8 and 2-3/4) and is generally compatible with typical North American deadbolt spacing when installed to spec.

Battery
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

Battery life is often rated around 8 months on four AA cells and many users report strong endurance, while a few long-term accounts cite faster drain. USB-C emergency power and a physical key mitigate low-battery scenarios.

Bluetooth
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

Bluetooth is the default direct connection and usually works reliably within range, though initial connections can take a few seconds. Binding to an Aqara hub can shift more traffic to Zigbee and feel snappier for remote tasks.

Build quality and durability
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.4

The exterior housing is frequently described as heavy, sturdy, and premium-feeling (zinc-alloy/metal), while the interior side is more plastic. Overall durability impressions are strong, with some long-term cosmetic wear noted.

Door-sense
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

Door-sense relies on a gyroscope/accelerometer to infer open/closed/ajar status and trigger alerts or auto-lock. Accuracy is generally good after calibration, but a few reviewers report occasional false readings or less-than-perfect precision.

Door compatibility (deadbolt fit)
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.8

Fits many standard single-cylinder deadbolt doors, but door prep matters: small misalignment can cause friction or latch issues. Measure carefully and expect occasional hole/strike adjustments on older hardware.

Feature additions via updates
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
3.7

Firmware updates can add features and improve stability over time, and several reviewers cite meaningful improvements after updates. The update process can be more manual than expected (download to phone, transfer over Bluetooth).

Fingerprint
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.4

Fingerprint unlocking is consistently a standout: fast (often cited under 0.5s) and accurate, with storage kept on-device. Wet fingers or cuts can cause retries, but overall performance is excellent.

Finish durability
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.5

Some owners report the finish can scratch or show wear over months, especially on darker colors, even though it does not affect operation. The keypad coating is often praised for resisting smudges.

Geofencing
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
4.0

Geofencing and location-based automation options are available primarily through app automations and platform routines. They can be powerful but may be labeled beta and require always-on location permissions.

Guest Codes and Access
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.0

Guest access is flexible with one-time and temporary codes and shareable passes, and HomeKit can also generate guest codes. A recurring day-of-week/time window schedule is a noted limitation in several reviews.

Hub requirement
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.3

Hubs are optional for basic local use but commonly required for the best experience: Apple Home remote access needs a Home hub, and Matter/Alexa/Google/IFTTT and many remote features need an Aqara hub. This adds cost and setup complexity.

Installation and Setup
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.3

Most reviewers found installation straightforward for standard deadbolts, with clear in-app tutorials and a required calibration step. Older doors sometimes need drilling or chiseling for a smooth bolt throw.

Key override reliability
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.5

A hidden physical keyway plus included keys provide a dependable backup, and multiple reviewers recommend carrying a key in case of connectivity or power issues. Manual operation from inside remains simple via the thumbturn.

Keypad
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.1

The touchscreen keypad is widely praised for being backlit, responsive, and easy to use for 6-10 digit codes. Minor nitpicks include needing to wake it first and, in some workflows, pressing a confirm/lock button.

Keyway quality
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
2.7

Re-keying is a common pain point: several reviewers say the cylinder and pins are nonstandard or hard to swap, making matching existing house keys difficult without a locksmith-level workaround.

Lock/unlock speed
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.4

Lock and unlock actions are generally quick, especially via fingerprint and Home Key, with responsive bolt movement. App and auto-lock actions can show small delays depending on connectivity and settings.

Locking motor
Product 1: Lockly Secure Plus Smart Lock
4.6

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

Product 2: Aqara Smart Lock U100
5.0

The motor is often described as powerful with high torque and fast actuation, helping the deadbolt throw confidently. Proper alignment is still important to avoid binding on the strike.

Locking reliability
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.3

Day-to-day locking is usually reliable, but a minority of long-term reports mention occasional offline freezes or auto-lock calibration mishaps. Firmware updates and a reset often improve stability, and a physical backup is advised.

Notifications
Product 1: Lockly Secure Plus Smart Lock
1.5

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

Product 2: Aqara Smart Lock U100
3.8

Notifications cover unlock events, door-not-locked warnings, and various alerts, with do-not-disturb controls available. Some long-term feedback mentions missed alerts or occasional incorrect status reporting in the app, often improving after updates.

Physical attack resistance
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
3.5

Some reviews cite BHMA/ANSI compliance and sturdy construction for basic physical resilience, but it is not positioned as the highest-grade security hardware. The practical security story is the combination of durability, alerts, and logs.

Pick/drill resistance (if rated)
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
3.5

Pick/drill resistance is not emphasized with a top-tier rating in these reviews, and several discussions imply it is similar to typical consumer smart lock cylinders. If high-security cylinder performance is a priority, this may not be the best match.

Remote access
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

Remote access is achievable through a HomeKit hub and/or an Aqara hub, enabling remote lock control, status checks, and code management. Without a hub, control is typically limited to Bluetooth range.

Security features (encryption)
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.4

Security is reinforced with AES-128 style encryption claims and on-device fingerprint storage, which reviewers view positively for privacy. The feature set focuses on secure access methods and auditability rather than ultra-high-security cylinders.

Smart-home integration (Alexa, Google, Siri, HomeKit, Matter, Thread)
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.3

Integration is a major strength: Apple Home/Home Key and Siri work well, and with an Aqara hub the lock can expand to Matter, Alexa, Google Home, and IFTTT. A few ecosystem-specific quirks and hub dependencies are the main downsides.

Tamper detection sensitivity
Product 1: Lockly Secure Plus Smart Lock
No score yet
Product 2: Aqara Smart Lock U100
4.0

Brute-force mitigation is solid, with alarms, visual warnings, and a lockout after repeated failed attempts that disables keypad/fingerprint temporarily. Sensitivity and lockout timing are typically adjustable.

Touchscreen
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.1

The touch interface is generally sensitive and satisfying, with a matte finish that helps readability and reduces fingerprint marks. Night visibility is typically strong thanks to the backlight.

Two-factor authentication availability
Product 1: 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.

Product 2: Aqara Smart Lock U100
No score yet
User access management
Product 1: 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.

Product 2: Aqara Smart Lock U100
3.9

User management supports multiple users, fingerprints, passcodes, and (Aqara) NFC credentials with per-user limits. Apple Home's access management is simpler and may not expose the same scheduling and log detail.

Value and Price
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.1

Value is frequently rated high, especially when discounted and compared with other Home Key locks. The main price caveat is that adding hubs can push the total closer to premium competitors.

Voice control
Product 1: 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.

Product 2: Aqara Smart Lock U100
4.0

Voice control is strong via Siri/HomeKit, while Alexa and Google typically require an Aqara hub and may need extra setup steps. Voice unlocking commonly uses a PIN or platform security gating.

Warranty and support
Product 1: 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.

Product 2: Aqara Smart Lock U100
No score yet
Weather resistance
Product 1: Lockly Secure Plus Smart Lock
4.5

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

Product 2: Aqara Smart Lock U100
4.5

The exterior portion is IP65-rated and reviewers report it tolerates heat, cold, and rain well. The interior unit is not weather-rated but is protected indoors.

Wi-Fi
Product 1: 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.

Product 2: Aqara Smart Lock U100
1.0

There is no built-in Wi-Fi radio, so the lock itself cannot connect directly to a router. Remote control and broader integrations rely on an Apple Home hub and/or an Aqara Zigbee hub acting as the bridge.