How to Choose a Smart Lock
Choosing a smart lock means balancing security, convenience, and compatibility with your existing smart home ecosystem. This guide breaks down the key features, types, and top-rated models to help you find the right lock for your door.
Quick answer
The best overall smart lock is the August Wi-Fi Smart Lock (4th Gen) for its seamless retrofit design and reliable auto-unlock. For a budget-friendly option with strong features, the Wyze Lock Bolt offers excellent value. For a full replacement with a keypad, the Yale Assure Lock 2 is a top choice.
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Research updated June 2026.
August Wi-Fi Smart Lock (4th Gen)
Retrofits over your existing deadbolt, works with Alexa and Google, and offers reliable auto-unlock.
| Product | Best For | Key Spec | Rating | Price |
|---|---|---|---|---|
| August Wi-Fi (4th Gen) | Overall / Retrofit | Retrofits existing deadbolt | 4.6 / 5 | Mid |
| Yale Assure Lock 2 | Full Replacement | Keypad + touchscreen | 4.5 / 5 | Mid |
| Wyze Lock Bolt | Budget Pick | Keypad + app control | 4.3 / 5 | Low |
| Schlage Encode Plus | Apple Home Key | Built-in Wi-Fi | 4.5 / 5 | High |
| Ring Smart Lock Pro | Ring Ecosystem | Works with Ring Alarm | 4.2 / 5 | Mid |
August Wi-Fi Smart Lock (4th Gen)
Best Overall / RetrofitPros
- Easy DIY install over existing deadbolt
- Reliable auto-unlock via geofencing
- Works with most smart home platforms
Cons
- Requires existing deadbolt for full function
- No built-in keypad (sold separately)
The August Wi-Fi Smart Lock (4th Gen) is the top pick for most homeowners because it installs over your existing deadbolt in minutes. It connects directly to Wi-Fi, so you don't need a separate hub, and it supports Alexa, Google Assistant, and Apple HomeKit. The auto-unlock feature uses your phone's location to unlock the door as you approach, which owners find very reliable.
Battery life is rated at 3-6 months depending on usage, and the lock sends low-battery alerts. The main drawback is the lack of a built-in keypad; you need to buy the August Keypad separately if you want to use codes. Overall, it is a versatile and user-friendly smart lock that works with your existing hardware.
Yale Assure Lock 2
Best Full ReplacementPros
- Touchscreen keypad with backlight
- Modular design for different smart home hubs
- Built-in alarm for tamper detection
Cons
- Wi-Fi module sold separately for some models
- Installation requires replacing entire deadbolt
The Yale Assure Lock 2 is a full replacement smart lock that includes a touchscreen keypad for keyless entry. It is available in models that support Z-Wave, Zigbee, or Wi-Fi, allowing you to integrate it with your existing smart home hub. The lock features a built-in alarm that sounds if someone tries to tamper with it.
Owners praise the sleek design and the responsive touchscreen. The lock also supports up to 250 user codes, making it ideal for rentals or homes with many users. The main downside is that the Wi-Fi module is not included in all versions, so you need to check compatibility before buying. It is a solid, secure choice for a full replacement lock.
Wyze Lock Bolt
Best Budget PickPros
- Very affordable price point
- Includes a keypad for code entry
- Easy DIY installation
Cons
- No Apple HomeKit support
- App can be slow to respond at times
The Wyze Lock Bolt is the best budget smart lock, offering a keypad and app control at a fraction of the cost of competitors. It retrofits over your existing deadbolt and includes a keypad that can be mounted on the door or wall. The lock supports Alexa and Google Assistant for voice control.
Owners appreciate the value for money and the easy setup process. The lock also features auto-lock and schedule-based locking. The main drawbacks are the lack of Apple HomeKit support and occasional delays in the app response. For the price, it is a great entry-level smart lock that covers the basics well.
Schlage Encode Plus
Best for Apple Home KeyPros
- Built-in Wi-Fi, no hub needed
- Supports Apple Home Key (tap to unlock)
- ANSI Grade 1 certified for security
Cons
- Higher price point
- Larger size may not fit all doors
The Schlage Encode Plus is a premium smart lock that includes built-in Wi-Fi and supports Apple Home Key, allowing you to tap your iPhone or Apple Watch to unlock. It is also certified ANSI Grade 1, the highest residential security rating. The lock features a built-in keypad and a traditional key override.
Owners love the seamless integration with Apple HomeKit and the robust build quality. The lock also works with Alexa and Google Assistant. The main downsides are the higher price and the larger size, which may not fit all door preparations. It is the best choice for Apple users who want the convenience of Home Key.
Ring Smart Lock Pro
Best for Ring EcosystemPros
- Integrates with Ring Alarm system
- Works with Alexa for voice control
- Easy retrofit installation
Cons
- Requires Ring Alarm hub for full features
- No Apple HomeKit support
The Ring Smart Lock Pro is designed for users who already have a Ring Alarm security system. It connects via Z-Wave and works with the Ring app to lock and unlock your door. It also supports Alexa for voice control and can be set to automatically lock when you arm the alarm.
Owners appreciate the seamless integration with Ring devices and the ability to create routines. The lock also features a built-in alarm that sounds if someone tries to force it. The main downside is that it requires the Ring Alarm hub to function fully, and it does not support Apple HomeKit. It is the best choice for Ring users.
What to check before buying a smart lock
Before you buy a smart lock, check your door's compatibility. Most smart locks fit standard US doors with a 2-3/8 inch or 2-3/4 inch backset and a 1 inch hole for the deadbolt. Measure your door's thickness; most locks fit doors that are 1-3/8 to 1-3/4 inches thick. Also, check if you have a mortise lock or a multi-point lock, as these are not compatible with standard smart locks.
Next, decide on the type of smart lock. Retrofit locks install over your existing deadbolt, making them easy to install and ideal for renters. Full replacement locks replace the entire deadbolt and often include a keypad. Keyless locks remove the keyhole entirely. Choose based on your needs for convenience and security.
Consider connectivity. Wi-Fi locks connect directly to your home network, so you don't need a hub. Z-Wave and Zigbee locks require a hub but are often more reliable and integrate with more systems. Bluetooth locks only work when your phone is nearby. Think about which smart home ecosystem you use, such as Alexa, Google, or Apple HomeKit, and choose a lock that supports it.
Battery life is another key factor. Most smart locks use 4 AA batteries and last 3-6 months. Look for locks that send low-battery alerts to your phone. Some locks also have a backup key or a 9V battery terminal on the outside for emergency power.
Finally, check security ratings. Look for locks that are ANSI Grade 1 or Grade 2 certified. Grade 1 is the highest residential security rating. Also, consider locks with built-in alarms or tamper detection for added security.
Mistakes to avoid when buying a smart lock
One common mistake is not checking door compatibility. Many people buy a smart lock only to find it does not fit their door. Always measure your door's backset, thickness, and hole size before buying. Also, avoid buying a lock that requires a hub if you don't already have one, as this adds extra cost and complexity.
Another mistake is ignoring the smart home ecosystem. If you use Apple HomeKit, do not buy a lock that only works with Alexa. Make sure the lock supports your preferred voice assistant and app. Also, avoid buying a lock with poor battery life or no low-battery alerts, as this can leave you locked out.
Do not overlook the importance of a backup entry method. Some smart locks have no keyhole, so if the batteries die and you have no backup, you could be locked out. Choose a lock with a key override or a 9V battery terminal. Finally, avoid buying a lock from an unknown brand; stick with reputable brands like August, Yale, Schlage, and Ring for reliable performance and support.
FAQs
Are smart locks secure?
Yes, most smart locks are secure and use encryption to prevent hacking. They are also often certified to ANSI Grade 1 or 2 standards, which means they are as strong as traditional deadbolts.
Do smart locks work without Wi-Fi?
Yes, many smart locks use Bluetooth or Z-Wave and can work without Wi-Fi. However, you will not be able to control them remotely or get notifications without an internet connection.
Can I install a smart lock myself?
Yes, most smart locks are designed for easy DIY installation. Retrofit locks are the easiest, as they install over your existing deadbolt in minutes with just a screwdriver.
What happens if the battery dies?
Most smart locks have a low-battery alert that sends a notification to your phone. If the battery dies, you can use a backup key or a 9V battery terminal on the outside to power the lock temporarily.
Do smart locks work with all doors?
No, smart locks are designed for standard US doors. They do not work with mortise locks, multi-point locks, or doors with unusual thickness or backset measurements.
Can I use a smart lock with a rental property?
Yes, retrofit smart locks are ideal for rentals because they install over the existing deadbolt and can be removed easily. Some locks also allow you to create temporary codes for guests.
Do smart locks work with Alexa or Google?
Many smart locks work with Alexa and Google Assistant for voice control. Check the product specifications to confirm compatibility with your preferred voice assistant.
What is the best smart lock for Apple HomeKit?
The Schlage Encode Plus is the best smart lock for Apple HomeKit because it supports Apple Home Key, allowing you to tap your iPhone or Apple Watch to unlock.
How long do smart lock batteries last?
Most smart lock batteries last 3-6 months depending on usage. Factors like frequent locking and unlocking, Wi-Fi connectivity, and temperature can affect battery life.
Can I use a smart lock with a ring doorbell?
Yes, the Ring Smart Lock Pro integrates with Ring doorbells and the Ring Alarm system. Other smart locks can also work with Ring through Alexa routines.
What is the difference between a retrofit and a full replacement smart lock?
A retrofit lock installs over your existing deadbolt, while a full replacement lock replaces the entire deadbolt. Retrofit locks are easier to install and ideal for renters.
Are smart locks worth the money?
Yes, smart locks offer convenience and security features like keyless entry, remote access, and guest codes. They are a worthwhile investment for most homeowners.
Our verdict
The best overall smart lock is the August Wi-Fi Smart Lock (4th Gen) for its easy retrofit installation and reliable auto-unlock. For a budget-friendly option, the Wyze Lock Bolt offers great value with a keypad and app control. If you want a full replacement with a keypad, the Yale Assure Lock 2 is a solid choice. For Apple users, the Schlage Encode Plus is the best pick, and for Ring users, the Ring Smart Lock Pro integrates seamlessly.