The ease to use, having all my business needs in one place! I love that you can check out at any time without worrying about paying for it later or not being able to pay because your card got stolen/lost etc.. Having an app is great when we need our phones with us but also have access from anywhere via wifi!! Great product overall so far no complaints yet if anything i will just say make sure to try several different ones before settling down as there are many options right now (especially wireless point-of service).