Aqara Smart Lock U300 Review
Keyless entry with fingerprint, app, and voice control — and Apple Home Key support.
Walk up to your door, tap your iPhone, and you're in. The Aqara U300 is one of the few sub-$230 locks that does Apple Home Key without making you fiddle with a phone app at all.
What the Aqara U300 actually is
This is a deadbolt replacement that gives you about five ways into your house. Fingerprint, a touch keypad with PIN codes, the Aqara app, voice via Siri or Alexa, and Apple Home Key, which lets you tap an iPhone or Apple Watch against the lock to open it. The Home Key support is the headline feature, and it's the reason most people land on this lock instead of a cheaper Wyze or a fancier Schlage.
It runs around $180 to $230 at Amazon depending on sales, which puts it in an interesting spot. Cheaper than an August Wi-Fi Smart Lock or a Schlage Encode, and it includes a fingerprint reader those locks don't have at that price. Aqara also leans hard into Apple's ecosystem, so iPhone households get the most out of it.
How it performs day to day
The fingerprint reader is the part owners rave about. It reads fast and rarely whiffs, which matters when you've got grocery bags in both hands and a toddler losing patience. The keypad is a sensible backup for guests, dog walkers, and the in-laws who refuse to install an app.
Apple Home Key is genuinely the slickest way in if you're already on iPhone. No app launch, no waiting for Bluetooth to wake up. You just tap. It works even when your phone battery is dead thanks to Apple's power reserve, which is a nice safety net. Setup runs through the Aqara Home app, and you'll want the optional hub or a HomePod or Apple TV acting as a Home hub for remote access and full HomeKit features. Without one, you lose the unlock-from-anywhere convenience.
The one recurring gripe is the app. Aqara's software is functional but clunky, and notifications can lag. If you live in Apple Home instead, you mostly sidestep that. Android users are stuck with the Aqara app and get no Home Key equivalent, so the value proposition drops noticeably for them.
Pros and cons worth knowing
On the plus side: fast fingerprint unlock, real Apple Home Key support, a keypad for guests, and a price that undercuts most locks with this feature set. Battery life is solid, running months on AA cells with a low-battery warning long before you're locked out, and there's an emergency USB-C jump if you ignore that warning.
The downsides are real but manageable. The Aqara app is the weak link. Android households don't get the marquee feature. And the deadbolt body is on the chunky side, so check your door clearance and existing hardware before buying. Some owners also note the auto-lock timing options could be smarter.
Who should buy it, and who should skip it
Buy it if you're an iPhone household that wants tap-to-enter and a fingerprint backup without spending Schlage money. It's our pick for Apple Home users who don't want to babysit an app. Families will appreciate handing out PIN codes instead of spare keys.
Skip it if you're all-in on Android, since you lose Home Key and lean entirely on Aqara's so-so app. Also skip it if your front door is non-standard or you're nervous about swapping a deadbolt yourself. And if you don't care about fingerprint or Home Key, a plain keypad lock will save you cash.
The verdict
For Apple households, the U300 is one of the smartest buys in smart locks right now. You get the convenience features that usually cost more, plus a fingerprint reader most rivals skip. The app is the catch, but if you live in Apple Home, it barely matters.
Recommended for iPhone owners. Everyone else should look harder at whether they'll actually use what this lock does best.
Frequently asked questions
- Does the Aqara U300 work with Apple Home Key?
- Yes. You can tap an iPhone or Apple Watch to unlock, and it works even if your phone battery is dead thanks to Apple's power reserve. You'll want a Home hub like a HomePod or Apple TV for full remote features.
- Does the U300 need a hub?
- Not to function locally. Fingerprint, keypad, and Home Key tap work without one. But you'll need an Aqara hub or an Apple Home hub for remote access, notifications, and unlocking from away.
- Is the Aqara U300 good for Android users?
- It's less compelling. Android users lose Apple Home Key entirely and rely on the Aqara app, which is the lock's weakest part. Fingerprint and keypad still work fine, but you're paying for features you can't fully use.
Marcus has spent over a decade testing consumer tech and gadgets. He cares about whether a product earns its price in real life — not on a spec sheet.
