Wyze Lock

One of the cheapest smart home locks on the market, this is a good entry level product for anyone with a Google or Samsung device.

An excellent choice for renters.

Wyze smart lock: Lock or unlock your door from anywhere using the Wyze app. Wyze Lock connects to your WiFi via the included Wyze Lock Gateway. Enable auto-lock and auto-unlock to never have to think about keys or codes again
Certified for Humans – Smart home made easy for non-experts. Setup with Alexa is simple.
Simple sharing: Wyze Lock lets you easily share access to your home with friends, family, contractors, dog walkers, and really, whoever you want. See a history of lock and unlock events. Wyze Lock gives you complete control of who has access to your home
Door position detection: Wyze Lock not only tells you the lock status, but also if the door is open or closed. Unlike other locks, Wyze Lock has a built-in gyroscope to know the position of the door. No need for separate sensors
Keyless door entry: Simply walk up to your door and have it unlock automatically and then lock behind you once you're inside. Purchase Wyze Lock Keypad and Wyze Cam separately for added security and surveillance. Works with your current key and deadbolt.