Best Smart Locks: August vs Yale vs Schlage Compared

The Smart Lock Showdown: August vs. Yale vs. Schlage

Upgrading your front door with a smart lock is one of the most impactful smart home improvements you can make. It eliminates the need to hide keys under the doormat, allows you to grant temporary access to guests or dog walkers, and integrates seamlessly with your broader home automation routines. However, the market is saturated with options, and choosing the wrong one can lead to connectivity headaches, drained batteries, or ecosystem incompatibility.

In this multi-product showdown, we are putting the three undisputed heavyweights of the smart lock industry head-to-head: the August Wi-Fi Smart Lock (4th Gen), the Yale Assure Lock 2, and the Schlage Encode Plus. Each of these devices represents a distinct philosophy in smart home security, from retrofit convenience to modular design and native NFC integration. We will break down their specifications, installation requirements, ecosystem compatibility, and security benchmarks to help you decide which lock deserves a spot on your front door.

Contender Profiles

August Wi-Fi Smart Lock (4th Gen)

August has long been the gold standard for renters and those who do not want to replace their existing exterior door hardware. The August Wi-Fi Smart Lock is a retrofit device that attaches to the interior thumb-turn of your existing deadbolt. This means your exterior keys and physical lock mechanism remain entirely unchanged. The 4th Gen model includes a built-in Wi-Fi radio, eliminating the need for the external Connect bridge required by older generations, and features the proprietary DoorSense sensor to confirm whether the door is physically closed, not just locked.

Yale Assure Lock 2

Yale, a legacy lock manufacturer now backed by the massive Assa Abloy group, takes a modular and design-forward approach with the Assure Lock 2. Available in both keypad and touchscreen variants, the Assure Lock 2 is a complete deadbolt replacement. Its standout feature is its modular network cap. Out of the box, you can configure it for Wi-Fi, but you can easily swap the internal module for Z-Wave or Thread/Matter, making it incredibly future-proof for users heavily invested in specific mesh networks. Its sleek, low-profile design makes it a favorite among design-conscious homeowners.

Schlage Encode Plus

Schlage is synonymous with brute-force security and traditional hardware reliability. The Encode Plus is a full deadbolt replacement featuring a traditional, tactile keypad with a physical keyway. Its defining feature is the native integration of Apple HomeKey. By simply tapping your iPhone or Apple Watch against the lock, the NFC chip communicates securely with your device to unlock the door, mimicking the experience of using Apple Pay. It is built like a tank, carries the highest residential security ratings, and is designed for users who prioritize physical security and Apple ecosystem integration above all else.

Specification & Pricing Breakdown

Before diving into the nuanced performance differences, let us look at the raw specifications and current market positioning of these three contenders.

Installation & Physical Design

The installation process is often the biggest hurdle for smart home beginners, and these three locks offer vastly different experiences.

The Retrofit Advantage: August

If you live in an apartment, rent your home, or simply have a high-end exterior handle set that you do not want to replace, the August Wi-Fi Smart Lock is your only viable option among these three. Installation takes roughly 15 minutes. You remove the interior thumb-turn, attach the August mounting plate using the existing screws, and snap the lock into place. The exterior of your door looks completely untouched. However, because it relies on your existing deadbolt, you must ensure your current hardware is in good working order; a sticky deadbolt will drain the August's batteries rapidly.

Full Replacements: Yale and Schlage

Both the Yale Assure 2 and Schlage Encode Plus require you to remove your entire existing deadbolt assembly, including the exterior keypad/handle and the interior thumb-turn. This requires a screwdriver and about 30 to 45 minutes of careful alignment. The Schlage Encode Plus is notably bulkier, featuring a massive interior escutcheon that houses the Wi-Fi radio and battery pack. It feels incredibly substantial, reinforcing its high-security positioning. The Yale Assure 2, by contrast, is remarkably slim. The interior assembly is compact and elegant, making it much less obtrusive on the inside of your door.

According to comprehensive testing by Wirecutter's smart lock reviews, proper alignment of the strike plate and deadbolt latch is the single most critical factor in ensuring long-term battery life and reliable auto-locking for any full-replacement smart lock.

Smart Home Ecosystems & Apple HomeKey

A smart lock is only as good as the ecosystem that controls it. All three locks support Amazon Alexa and Google Home, allowing for voice-controlled locking (though unlocking via voice usually requires a PIN for security reasons). However, their integration with Apple HomeKit reveals stark differences.

The Apple HomeKey Revolution

Apple HomeKey allows you to unlock your door by tapping your iPhone or Apple Watch against the lock via NFC, even if your phone battery is too low to boot up (via Express Mode). The Schlage Encode Plus was the first lock to market with this feature, and it remains the gold standard for Apple purists. The tap-to-unlock experience is instantaneous and feels like magic.

The Yale Assure Lock 2 also supports Apple HomeKey, but it requires you to set the lock up natively within the Apple Home app rather than the Yale Access app to enable the NFC feature. Once configured, it works flawlessly, though the physical tap zone on the Yale's glass touchscreen is slightly less forgiving than the Schlage's dedicated NFC ring.

The August Wi-Fi Smart Lock supports Apple HomeKit, but it does not support HomeKey. To unlock via Apple, you must use the Home app on your screen or rely on geofencing. For users heavily invested in the Apple Watch ecosystem, the lack of HomeKey on the August is a significant omission.

Geofencing and Auto-Unlock

When it comes to hands-free auto-unlocking via smartphone geofencing, August remains the undisputed king. August's proprietary geofencing algorithm creates a virtual perimeter around your home. When you cross the threshold and pause, the lock wakes up via Bluetooth and unlocks the door before you even reach for the handle. Neither Yale nor Schlage offers an auto-unlock feature natively due to security concerns regarding GPS spoofing, meaning you must manually pull out your phone or use a keypad code with those devices.

Network Protocols: Wi-Fi vs. Thread vs. Z-Wave

How your lock communicates with your router or smart home hub directly impacts its responsiveness and your home's network congestion.

• August Wi-Fi: Connects directly to your 2.4GHz Wi-Fi network. While convenient, Wi-Fi radios are power-hungry, which is why August relies on expensive CR123A lithium batteries and still suffers from relatively short battery life.
• Schlage Encode Plus: Also utilizes direct Wi-Fi. Schlage has optimized their firmware to sleep aggressively, but the initial wake-up time when opening the app remotely can sometimes take 3 to 5 seconds as the radio reconnects to your router.
• Yale Assure Lock 2: The modular cap is Yale's secret weapon. While the Wi-Fi module is included by default, swapping it for a Thread module allows the lock to join a Thread mesh network (via an Apple TV, HomePod, or Nest Hub acting as a border router). Thread is significantly faster, more reliable, and vastly superior for battery conservation compared to Wi-Fi.

For advanced users building a local, low-latency smart home, the Yale Assure 2 paired with a Thread border router is the superior technical choice.

Security Standards & Battery Performance

When evaluating physical security, the industry relies on the grading system established by the Builders Hardware Manufacturers Association (BHMA) and ANSI. Locks are tested against sledgehammer attacks, lock picking, and environmental stress.

The Schlage Encode Plus boasts an ANSI Grade 1 rating, the highest possible residential grade, meaning it can withstand massive physical force and over a million lock cycles. The Yale Assure Lock 2 holds a Grade 2 rating, which is standard for high-quality residential locks but technically a step below Schlage. The August lock is unrated because it is only an interior motor; your physical security is entirely dependent on the quality of the deadbolt you already own.

Battery Life Realities

Battery life is the most common complaint among smart lock owners. Wi-Fi connectivity is the primary culprit for battery drain. Below is a visualization comparing the estimated battery life against the retail cost of these three units.

The August Wi-Fi lock's reliance on CR123A batteries and constant Wi-Fi polling means you will likely be replacing batteries every 2 to 4 months. The Yale and Schlage use standard AA batteries, which are cheaper and easier to source, typically lasting 6 months to a year depending on usage. However, if you configure the Yale with a Thread module instead of Wi-Fi, battery life can easily extend past 12 months.

The Verdict: Which Should You Buy?

There is no single 'best' smart lock; the right choice depends entirely on your living situation, your ecosystem, and your technical preferences.

Choose the August Wi-Fi Smart Lock if:

• You are a renter or live in an HOA that restricts exterior hardware changes.
• You want to keep your existing physical keys and exterior handle set.
• You prioritize hands-free, geofenced auto-unlocking over all other features.

Choose the Yale Assure Lock 2 if:

• You are a design enthusiast who wants a sleek, low-profile interior and exterior.
• You want a key-free exterior to eliminate the risk of physical lock picking.
• You are building a Thread or Z-Wave mesh network and want a modular, future-proof device.

Choose the Schlage Encode Plus if:

• You are deeply embedded in the Apple ecosystem and want the seamless magic of Apple HomeKey NFC unlocking.
• You prioritize maximum physical security and require an ANSI Grade 1 rated deadbolt.
• You prefer a traditional, tactile keypad and the peace of mind of a physical backup keyway.

Ultimately, securing your home with smart technology requires balancing convenience with physical resilience. As noted in Apple's HomeKit security documentation, the integration of secure enclaves and NFC in modern locks like the Schlage and Yale bridges the gap between digital convenience and physical access control. Evaluate your door's current hardware, map out your smart home hub ecosystem, and select the contender that aligns with your daily routine.