The best part of this app, that I can say about it so far - its price! It's not expensive at all; in fact you will be surprised by how much money your business saves with each device connected to their cloud service (which costs just $1/year).
There are some bugs here or there but they fix them pretty fast when reported via support ticket system which works perfectly fine too if needed as well :) No complaints yet :D We use these devices mostly within our office building where we have an access control gate using RFID cards from other companies like Vantiv etc., those allow us only limited number people into certain areas per day while others require additional passwords / keys depending upon what area one needs entrance through security gates suchas lobby doors kitchen break rooms restrooms offices conference room meeting spaces ect..