Smart Home Fit
8.5/10
August Smart Lock 4th Gen (Wi-Fi, Matte Black)
Highly compatible smart lock with robust features for secure access.
Starting at
$179.00
Updated 14h ago · Price may vary. Check Amazon for exact price.
Works With
The August Smart Lock 4th Gen is a convenient retrofit smart lock ideal for users wanting easy installation and broad ecosystem support but less suited for those needing keypads or extended battery life.
The August Smart Lock 4th Gen (Wi-Fi, Matte Black) is a solid retrofit smart lock designed to upgrade your existing deadbolt without replacing the entire lock hardware. Its main strength lies in its easy installation—typically under 10 minutes—and the convenience of keeping your original keys while gaining Wi-Fi connectivity for remote control and keyless entry. It integrates well with Amazon Alexa, Google Home, and Apple HomeKit, making it versatile for various smart home setups. The built-in Wi-Fi eliminates the need for an additional bridge, which is a plus compared to some older August models. However, it does have some limitations. The lock’s battery life typically lasts around 3-6 months depending on usage, which means regular battery changes are necessary. Also, some users report occasional connectivity drops or delays in app response, especially in homes with spotty Wi-Fi coverage. The lock’s design is more suited for standard deadbolts; if your door has an unusual deadbolt or you want a fully integrated keypad, you might want to look elsewhere. This lock is perfect for renters or homeowners who want smart lock features without changing their entire lock system. It’s less ideal for those seeking advanced security features like built-in alarms or biometric access. Overall, it’s a dependable choice for those prioritizing easy retrofit and broad ecosystem compatibility but expect to manage battery replacements and occasional app hiccups.
7
Value
8
Setup
7
Reliable
6
App
9
Ecosystem
- Easy installation
- Remote locking/unlocking
- Auto-lock feature
- Compatible with multiple ecosystems
- Requires Wi-Fi
- May need additional keypad for code access
The August Wi-Fi Smart Lock (4th Generation) and August app allows you to remotely lock or unlock your door, check door status, grant virtual guest keys and always know who’s coming and going. Connected out of the box with built in Wi-Fi, the August Wi-Fi Smart Lock is easy to install and attaches to your existing deadbolt so you can keep your original keys.
Connectivity
Full feature set requires Wi-Fi connectivity; no Matter or Zigbee/Z-Wave support.
Compared to the Schlage Encode Smart Wi-Fi Deadbolt, the August 4th Gen offers easier retrofit installation since it works over your existing deadbolt, whereas Schlage requires full lock replacement. Schlage tends to have a longer battery life (up to a year) and a built-in keypad, which August lacks. The Yale Assure Lock SL offers a sleek touchscreen keypad and Z-Wave integration but requires a separate hub for Wi-Fi, unlike August’s built-in Wi-Fi. August’s strength is in its seamless integration with Apple HomeKit and the convenience of retaining your original keys, but it falls short if you want a lock with a keypad or longer battery life.
Installation difficulty is about a 2 out of 5, as the August Smart Lock 4th Gen is designed for quick retrofit over your existing deadbolt. Most users complete setup in 10-15 minutes using just a screwdriver. The process involves removing the interior thumb turn and attaching the August unit. Common issues include compatibility with certain deadbolt models and ensuring the lock is aligned properly to avoid jamming. Professional installation is generally not needed unless you have an unusual door or deadbolt.
In daily use, the August Smart Lock 4th Gen is generally reliable with responsive app control and quick locking/unlocking actions. Users report response times of 1-3 seconds on average, though occasional delays happen with weaker Wi-Fi signals. The app is straightforward but can feel limited compared to competitors like Schlage’s app. Battery life typically lasts 3-6 months, requiring AA battery replacements, which some find inconvenient. Firmware updates are automatic but occasionally cause brief connectivity interruptions.
- Battery life requires replacement every 3-6 months depending on usage
- Occasional connectivity drops or delayed app response
- Compatibility issues with some non-standard deadbolts
- No built-in keypad for PIN entry
- App lacks advanced customization features found in competitors
Consider waiting
This product has been cheaper in the past.
$64.99
May 7, 2026
$199.99
Mar 23, 2026
-7.1%
-3.5%
| Date | Source | Price | Stock |
|---|---|---|---|
| May 18, 2026 | Amazon | $179.00 | In Stock |
| May 17, 2026 | Amazon | $179.00$13.64 | In Stock |
| May 16, 2026 | Amazon | $192.64$0.64 | In Stock |
| May 15, 2026 | Amazon | $192.00$0.64 | In Stock |
| May 14, 2026 | Amazon | $192.64 | In Stock |
| May 13, 2026 | Amazon | $192.64 | In Stock |
| May 12, 2026 | Amazon | $192.64 | In Stock |
| May 11, 2026 | Amazon | $192.64 | In Stock |
| May 10, 2026 | Amazon | $192.64$18.37 | In Stock |
| May 9, 2026 | Amazon | $174.27 | In Stock |
Ideal for homeowners seeking a convenient, secure, and modern locking solution.
Consider pairing with a keypad for added convenience and security.
Buy the August Smart Lock 4th Gen if you want a quick retrofit solution compatible with major smart home platforms. Pair it with a strong Wi-Fi network near your door for best performance. Avoid if you need a keypad or longer battery life. Don’t forget to check your deadbolt compatibility before purchasing to avoid installation issues.
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