August WiFi Smart Lock Review: Best Retrofit Smart Lock?

Complete August WiFi Smart Lock 4th Gen review. Learn about auto-unlock, guest access, and whether this retrofit smart lock is right for your home.

August WiFi Smart Lock Review: Best Retrofit Smart Lock?
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5 min read 1,045 words
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Jan 12, 2026

By Jordan Haven

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Last updated: April 5, 2026

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August WiFi Smart Lock Review: Best Retrofit Smart Lock?

The August WiFi Smart Lock is a game-changer in the realm of smart home security. Designed to fit over your existing deadbolt, this smart lock allows you to retain the traditional key functionality while offering advanced smart features. With its sleek design and robust performance, it’s no wonder that the August WiFi Smart Lock has garnered attention as one of the best retrofit smart locks on the market.

Detailed Specs and Features

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  • Dimensions: 3.6 x 3.6 x 2.6 inches
  • Weight: 1.5 pounds
  • Battery Life: Up to 6 months on 4 AA batteries
  • Connectivity: Wi-Fi (2.4 GHz), Bluetooth
  • Compatibility: Works with most single-cylinder deadbolts
  • Smart Home Integration: Compatible with Amazon Alexa, Google Assistant, and Apple HomeKit
  • Key Features:
    • Auto-lock and unlock features
    • Remote access via smartphone app
    • Guest access management
    • Activity logs
    • Voice control capability

Pros and Cons

Pros
  • Easy retrofit installation over existing deadbolt
  • Seamless integration with smart home systems
  • Remote control and monitoring via app
  • Auto-lock feature enhances security
  • Guest access management is convenient for visitors
Cons
  • Requires Wi-Fi for full functionality
  • Battery life may vary with usage
  • Higher price point compared to traditional locks

Setup Experience

The installation process for the August WiFi Smart Lock is straightforward, especially for those already familiar with DIY projects. The lock comes with a detailed instruction manual that guides you through the process step-by-step. You simply remove the existing thumb latch from your deadbolt and replace it with the August lock. The entire process takes about 15-30 minutes, depending on your experience level.

After installation, connecting the lock to your Wi-Fi network and syncing it with the August app is a breeze. The app is user-friendly, allowing you to set up various features such as auto-lock, unlock notifications, and even guest access. Overall, the setup experience is commendable, making it accessible for users of all technical backgrounds.

Performance in Daily Use

In day-to-day usage, the August WiFi Smart Lock performs exceptionally well. The auto-lock feature works seamlessly, automatically locking the door after a specified period, while the auto-unlock feature recognizes your smartphone's proximity and unlocks the door as you approach. This feature is particularly useful when your hands are full.

The app provides real-time notifications whenever the door is locked or unlocked, giving you peace of mind. Additionally, the guest access feature allows you to send virtual keys to friends or family, which can be set to expire after a certain time. This is particularly useful for those who frequently have visitors or service personnel accessing their homes.

Comparison with Alternatives

When comparing the August WiFi Smart Lock with alternatives like the Schlage Encode Smart WiFi Deadbolt and the Yale Assure Lock SL, a few differences stand out. The Schlage Encode has a built-in Wi-Fi connection, eliminating the need for additional hubs, while the Yale Assure Lock SL offers a keypad option for entry. However, the August lock's ability to retrofit existing deadbolts gives it a unique advantage, especially for renters who may not want to change their entire locking system.

Moreover, while the August lock integrates well with various smart home systems, the Schlage Encode is often praised for its robust security features. Ultimately, the choice between these locks will depend on individual preferences, such as installation ease, budget, and specific feature requirements.

Verdict and Rating

In conclusion, the August WiFi Smart Lock stands out as an excellent option for anyone looking to upgrade their home security without the hassle of replacing their entire locking mechanism. Its ease of installation, smart features, and compatibility with various smart home systems make it a top contender in the smart lock market.

While there are some drawbacks, such as dependency on Wi-Fi and a relatively higher price point, the overall performance and convenience offered by the August WiFi Smart Lock make it a worthy investment for those seeking enhanced security.

Rating: 8.5/10

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Jordan Haven
Written byJordan Haven

Smart home enthusiast and tech writer helping families navigate the connected home journey. I've tested hundreds of devices across Alexa, HomeKit, Google Home, and SmartThings ecosystems. My mission: make smart home tech accessible to everyone, not just tech experts. When I'm not reviewing the latest gadgets, you'll find me creating automation routines that make daily life just a little bit easier.