
Retrofit smart locks are designed to be installed over an existing deadbolt, allowing users to keep their original keys. The installation process is typically simple, often requiring only a screwdriver and taking just a few minutes.
Trend signals, demand data, and market insights for this product
45/100
sustained
$44 - $346




Real data showing search growth, social buzz, and consumer demand signals.
Google Trends (12 Months)
TikTok Posts
Level
Prominent tech influencer and the lead video producer for AppleInsider, a major publication focused on Apple products and the smart home ecosystem.
Level
Lead editor of 9to5Mac's HomeKit Weekly series and a leading voice in the Apple smart home community.
SwitchBot
Creator behind the popular YouTube channel NotEnoughTech, a respected influencer in the home automation and tech space.
Current bestsellers and viral hits defining the consumer expectation.






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These brands are driving demand and shaping what consumers want to buy.

MARKET LEADER
The August Wi-Fi Smart Lock is an iconic product in the renter-friendly category and is frequently cited as the best overall retrofit lock. Its design allows it to be installed exclusively on the inside of the door, replacing only the interior thumb turn of an existing deadbolt. This key feature means renters can keep their original keys and the exterior door hardware remains unchanged, a crucial factor for leased properties. The lock pushes the trend by making smart home technology accessible without complex installation or permanent modifications. It features built-in Wi-Fi, eliminating the need for a separate connectivity bridge and allowing for remote access and control from anywhere via the August app. It supports voice commands through major smart home ecosystems like Alexa, Google Assistant, and Apple HomeKit, and includes features like auto-unlock as you approach the door and auto-lock after a set time. Users can also grant temporary or scheduled guest access, enhancing convenience for visitors without needing to exchange physical keys.
Key Product: Wi-Fi Smart Lock

MARKET LEADER
The Yale Approach is a slim and modern retrofit smart lock specifically designed with renters in mind. Like other retrofit models, it attaches to the interior side of an existing deadbolt, preserving the original lock and keys. Its slender profile is less bulky than many competitors, offering a more discreet look on the inside of the door. The Yale Approach helps drive the renter-friendly trend by offering the security and features of a trusted lock brand in an easy-to-install, non-permanent format. It uses a plug-in Wi-Fi bridge to connect to the internet, enabling remote locking/unlocking, status checks, and integration with voice assistants like Amazon Alexa and Google Home. The lock's app is responsive and allows for features like auto-unlock and auto-lock, which can be customized by the user. For those wanting keypad entry, it can be paired with an optional wireless keypad.
Key Product: Approach Lock with Wi-Fi

MARKET LEADER
The Level Lock+ is a leader in the trend of invisible smart technology, making it an exceptional choice for renters who want smart features without any visible change to their door's appearance. The lock's entire mechanism is ingeniously housed within the door's existing deadbolt footprint, making it completely indistinguishable from a traditional lock from the outside. This pushes the trend by proving that powerful smart home utility doesn't have to come at the expense of design or a landlord's approval. Installation is as straightforward as replacing a standard deadbolt, and it can be easily removed upon moving out. A standout, trendy feature is its support for Apple Home Key, which allows users to unlock the door by simply tapping their iPhone or Apple Watch. It also supports control via the Level app, physical keys, and an optional keypad accessory.
Key Product: Level Lock+
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