The XDA piece this week made a real argument: most smart locks ship with apps that turn a one-second mechanical task into a multi-step ritual, and the convenience case collapses the moment the network drops, the battery dies, or the cloud service goes down. The lock itself is half the product. The companion app is the other half, and it is where the gap between brands gets brutal. We tested 7 of the best smart lock apps on Android, judging unlock latency over Bluetooth, what happens when the cloud is unreachable, and whether basic guest-key sharing is free or paywalled.
What to look for in a smart lock app
Five things separate a useful smart lock app from a stress generator:
- Local Bluetooth unlock. The lock should open instantly from your phone over Bluetooth without contacting a cloud server. Apps that require an internet round-trip for every unlock are the ones that fail in elevators and garages.
- Offline access fallback. If the app is down, can you still open the lock with a code, a key fob, or a physical key. The answer should always be yes.
- Guest key sharing without a subscription. Sending a one-time code to a dog walker should not require a monthly plan.
- Auto-lock and geofencing. The lock should re-lock itself after a delay and should optionally unlock when your phone arrives at the door.
- Smart home integration. HomeKit, Matter, Alexa, Google Home, SmartThings. The strongest apps support at least three.
Quick comparison
| App | Best for | Subscription | Smart home | Local unlock |
|---|---|---|---|---|
| August Home | The Yale-Assa Abloy ecosystem | Optional | Alexa, Google, HomeKit | Yes |
| Yale Access | Yale-branded smart locks | Optional | Alexa, Google, HomeKit | Yes |
| Schlage Home | Schlage Encode and Sense | No | Alexa, Google | Yes |
| Eufy Security | Subscription-free smart lock owners | No | Alexa, Google, HomeKit (select models) | Yes |
| Lockly | Fingerprint and PIN-shuffling locks | No | Alexa, Google | Yes |
| Wyze | Budget retrofit smart locks | Optional | Alexa, Google | Yes |
| SwitchBot | Renters using a Bluetooth retrofit | No | Alexa, Google, Matter (with hub) | Yes |
The 7 best smart lock apps for Android
1. August Home — best for the Yale-Assa Abloy ecosystem
The August Home app drives August’s Wi-Fi Smart Locks and the August-built side of the Yale-Assa Abloy line. Local Bluetooth unlock is fast (under two seconds in our test), the auto-lock timer is finely tunable, and guest invitations are free. The “DoorSense” feature confirms whether the door is actually closed before locking, which catches the most common failure mode of every smart lock.
Where it falls short: the app requires creating an August account even for purely local features. A few users on Reddit have reported that Bluetooth-only unlock falls back to cloud verification more often than the marketing implies.
Pricing:
- Free: full lock control, auto-lock, DoorSense, basic activity log
- Paid: optional 24/7 activity log history with the Smart Alerts plan
Platforms: Android, iOS, Apple Watch, Wear OS.
Download: Google Play
Bottom line: the right pick if the lock on the door is an August or a recent Yale Assure with the August module.
2. Yale Access — best for Yale-branded smart locks
The Yale Access app is the rebranded August app for Yale’s own line of Assure Locks. The feature set is functionally identical to August Home (same backend), but the branding and the supported hardware list differ. If the box says Yale, this is the app to install rather than August Home.
Where it falls short: the dual-app situation is genuinely confusing for new users who own both an August and a Yale lock. Some Yale models still require an Assure Connect Wi-Fi bridge to expose Alexa or Google Home control.
Pricing:
- Free: full lock control, auto-lock, DoorSense (on supported models)
- Paid: same Smart Alerts upgrade as August
Platforms: Android, iOS, Apple Watch.
Download: Google Play
Bottom line: the right pick for Yale Assure SL, Assure 2, or Approach hardware.
3. Schlage Home — best subscription-free option
The Schlage Home app pairs with Schlage Encode and Sense locks and never asks for a subscription. Bluetooth unlock is reliable, the access code system supports up to 100 unique PINs, and the activity log keeps a usable history without a paywall. The app’s simplicity is the strongest argument for it: there is no upsell layer between you and the lock.
Where it falls short: the design feels older than the August or Yale apps. Smart home integration is limited to Alexa and Google Home; there is no HomeKit support without the Schlage Encode Plus model.
Pricing:
- Free: all features
Platforms: Android, iOS.
Download: Google Play
Bottom line: the right pick when avoiding any monthly fee is the top priority.
4. Eufy Security — best for households already in the Eufy ecosystem
The Eufy Security app handles Eufy’s smart locks (Smart Lock S230, Video Smart Lock E330) alongside Eufy doorbells and cameras in a single shelf. Subscription is optional, lock control is local-first, and the doorbell-integrated lock model lets you talk to a visitor through the camera and unlock from the same screen.
Where it falls short: Eufy’s older data-handling incident still colours the brand for some buyers. Smart home integration on the locks specifically is shallower than on the cameras.
Pricing:
- Free: full lock control, basic activity log, video preview on the E330
- Paid: Eufy Care optional for cloud video backup on the Video Smart Lock
Platforms: Android, iOS.
Download: Google Play
Bottom line: the right pick if there are already Eufy cameras on the wall.
5. Lockly — best for fingerprint and PIN-shuffling locks
The Lockly app drives the Lockly Vision Elite and Secure Pro lines, which combine a fingerprint reader with a PIN keypad that shuffles the digit positions to defeat shoulder-surfing and smudge attacks. The app handles guest PINs (one-time, scheduled, or recurring) without a subscription, and the offline mode lets the lock function as a standalone keypad even if the app is uninstalled.
Where it falls short: the keypad-shuffle UI takes a few presses to learn for older users. The Lockly Hub is a separate purchase if you want remote unlock from outside Bluetooth range.
Pricing:
- Free: all lock features
- Hardware: hub sold separately if remote unlock is needed
Platforms: Android, iOS.
Download: Google Play
Bottom line: the right pick when biometric unlock and PIN-shuffle anti-shoulder-surf are the deciding features.
6. Wyze — best budget retrofit option
The Wyze app supports the Wyze Lock (an over-the-deadbolt retrofit) and the newer Wyze Lock Bolt. The retrofit model is the cheapest path to a Bluetooth-unlock setup on a rental, because the lock screws on top of the existing deadbolt and keeps the original key working. Auto-unlock fires when your phone enters the geofence and crosses the door’s Bluetooth threshold.
Where it falls short: Wyze’s account-breach history is a real reason to hesitate. The Wyze Lock Bolt’s keypad battery drains faster than competitors.
Pricing:
- Free: full lock control, geofence auto-unlock, guest codes
- Paid: Cam Plus subscription only relevant if pairing with a Wyze doorbell
Platforms: Android, iOS.
Download: Google Play
Bottom line: the right pick for renters on a tight budget who already trust their landlord’s deadbolt.
7. SwitchBot — best for renters with a Bluetooth retrofit
The SwitchBot app drives the SwitchBot Lock and Lock Pro, both of which sit on top of an existing deadbolt thumb-turn and rotate it with a small motor. The retrofit keeps the original keys working, which matters in rentals where the landlord cannot have the locks replaced. Pair the lock with a SwitchBot Hub Mini to get Matter, Alexa, and Google Home control. The app handles fingerprint scanning, NFC tags, and one-time guest codes without a subscription.
Where it falls short: the over-the-thumb-turn form factor is bulky and visible from inside. Bluetooth range is shorter than the integrated locks above.
Pricing:
- Free: full lock control, fingerprint, guest codes
- Hardware: SwitchBot Hub Mini sold separately for cloud and Matter access
Platforms: Android, iOS, Wear OS.
Download: Google Play
Bottom line: the right pick when the lock has to come off the door the day you move out.
How to pick the right one
Map the situation to the app, not the other way round:
- If you own a Yale Assure 2 or an August Wi-Fi Smart Lock: August Home or Yale Access. Same backend, different brand sticker.
- If you refuse to pay a monthly fee for anything: Schlage Home or Lockly. Both ship complete out of the box.
- If you already have Eufy cameras: Eufy Security. One app, fewer notifications to ignore.
- If you rent and the landlord will not replace the deadbolt: SwitchBot Lock. The retrofit keeps the old keys working.
- If you want the cheapest path to a Bluetooth unlock: Wyze. Accept the brand’s mixed security history as the price of the deal.
- If you want a fingerprint reader and a shuffling keypad: Lockly. The anti-shoulder-surf design is genuinely unique.
FAQ
Do smart lock apps work offline? The good ones do. Local Bluetooth unlock should not require a cloud round-trip. August, Yale Access, Schlage Home, Eufy, Lockly, Wyze, and SwitchBot all support local unlock when paired over Bluetooth. Cloud features (remote unlock from outside Bluetooth range, voice control, geofence triggers) need a Wi-Fi connection.
Which smart lock app is best for Apple HomeKit? August Home, Yale Access (on supported models), and Eufy Security (on the Smart Lock S230) support HomeKit. Schlage requires the Encode Plus model. Lockly, Wyze, and SwitchBot do not support HomeKit directly without a third-party bridge.
Can I share a smart lock with family without paying a subscription? Yes on every app in this list. Guest-key sharing, time-limited PINs, and family invites are all free across August, Yale, Schlage, Eufy, Lockly, Wyze, and SwitchBot. The paid tiers add longer activity histories or cloud video recording, not basic sharing.
What is the best smart lock app without monthly fees? Schlage Home and Lockly ship with every meaningful feature free forever. SwitchBot is also free for the lock itself, but a hub purchase is required for cloud features.
Do smart locks work with Matter? Matter support is rolling out unevenly. SwitchBot supports Matter through the Hub Mini. August and Yale support Matter on newer models. Schlage Encode Plus added Matter in 2024. Lockly and Wyze do not currently expose their locks over Matter.
