Level has been quietly rethinking what a smart lock should look like. The Lock+ hides its tech completely, fitting inside your existing deadbolt without the bulky external keypad or visible electronics most competitors require. From the outside, it looks like a standard stainless steel deadbolt. From the inside, same thing. That matters if you don’t want your front door screaming “smart home” to every visitor.

The standout feature is Apple Home Keys. You tap your iPhone or Apple Watch against the lock to unlock it, using the same wallet-based credential system Apple built for payments. It works without waking your phone or opening an app. Just tap and the door opens. Response time is under a second in testing. The lock also supports Siri voice commands and remote access through the Level app, but the tap-to-unlock experience is where this lock differentiates itself. It feels faster and more natural than fumbling for a key or pulling out your phone.

Battery life is rated at six months with typical use, and the lock is weather-resistant enough for exterior doors in most climates. The metal and stainless steel construction feels solid, though installation is tighter than average if your door’s deadbolt hole isn’t perfectly aligned. It works with existing hardware, but you’ll want to measure carefully before committing. For iPhone users who want a lock that disappears into the door, this is the cleanest option available.