Very simple and easy to install and program and use. 
This lock allows you to program 250 users/codes into it.... I don't see the need for that many people for my house, but could be a good option for maybe a business or something? I am impressed how easy to install and set up. Simple app program to use. Finish looks great on my front door. The ease of having the ability to unlock from anywhere without having the key in hand or making copies of keys for friends and family is great!