Compare Aqara Smart Lock U100 vs Lockly Secure Plus Smart Lock

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.

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.

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.

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.

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

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.

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

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 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.

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 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.

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.

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.

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

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.

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

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.

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.

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 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.

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

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.

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

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 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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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 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.

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

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.

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

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.

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 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.

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

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 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 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.

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

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.

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.

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.

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.

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.

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.

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.

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 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.

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 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.

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 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.

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

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

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.

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

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.

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.