I have been using this lock for about two years now. It works great looks cool and has some cool features. I like that I get a email when my children come home. Those are the pros. Cons lock is kind of slow. If you want to unlock using your phone it takes way to long. Says out of range then go through again and it will connect. Sometimes it locks and unlocks for no apparent reason. Have to turn off bluetooth on phone. Sometimes it will not delete user that you requested. Batteries do not last long. I have not tried the new wifi add on as it's kind of pricy. It's supposed to be connected to my nest products but haven't been able to get that to work.