Wi-Fi Watcher will alert you when your Wi-Fi connection is disconnected or connected with no internet access. You need Wi-Fi Watcher even when you have unlimited data because most wireless is not truly unlimited. Data speeds slow down tremendously and causes a lot of video buffering when you use an excessive amount of data, even on "unlimited" high-speed data plans! Just check the fine print! Most people do not notice when their Wi-Fi is not connected until they get a text messaging saying they have used almost all of their data for the month! One video can be all of the data you have for the month if you're not on your Wi-Fi! The cellphone company will then urge you to buy more GB of high-speed data! Wi-Fi Watcher is 100% free! If you or your kids have a habit of using up your monthly data because you're not paying attention to the tiny Wi-Fi icon at the top of your phone, then you need Wi-Fi Watcher! #WifiWatcher