Just checked it out...this is basically a wallpaper app.
For instance, it lets you "see weather on your lock screen," but the way it does that is to load up a forecast in the app, then take a screenshot of it, then set that screenshot as the lock screen wallpaper. It cannot update itself--if you set it up with calendar appointments, it cannot add any new ones. If the weather forecast changes, the lock screen will not change.
In other words, you could save two dollars by writing down the forecast and your calendar appointments on a piece of paper, then taking a picture of it. Just be ready to do it all over again as soon as you need to change anything.