Google Keep is a reminders application run through Google. It allows you to set reminders and alarms so you wont miss your appointments, meetings, etc. One thing that I found cool about Keep is that the data syncs to the app you can download on your phone.  It is a great alternative to the standard reminders app on most phones. In all honesty, I am not one to use reminders applications. I have no need for it. But if you are a person who's schedule is constantly overloaded with activities, I would definitely recommend you use this app.