August is one of the 3 smart locks soon to be available to consumers, meaning it may work with your mobile device. Read full article. August Smart Lock is the cheapest Smart Lock soon to be available. You can pre-order it for $200, when other locks are $220 and $280.
As far as I understand so far, you can setup August so that it auto unlocks the door when you approach it. When you are inside your house, you'll have to manually open the door to leave the residence, which is definitely a good thing. You don't want to walk to the door to see who's outside and the door automatically open on you.
August Smart Lock does not have camera as Goji has and no LED light as Kiwiset offers. August Smart Lock is visible only from inside. Outside of the house, the smart lock is not visible. Another good and bad thing here is you must have a deadbolt for complete installation. Bad thing is you have to buy a deadbolt separately. You might be wondering, what is a good thing if I have to buy another piece? Well, you can buy any deadbolt (or mostly any), meaning you can get a good one that is hard to pick lock to open it.
Now here is something to think about. If you want a special or expensive separate deadbolt, August Smart Lock should work for you. Now if you don't care about getting special deadbolt, buying new one will cost you at least $40, bringing the price to $240. You can get a Goji for $280 with deadlock and built in camera. I would say definitely look at all smart lock options before making a purchase.
August Official Site