toastr is an app aimed at helping you remember your random goals, be it drinking an extra glass of water every day, doing a set of push-ups, eating healthy, sending an email, or making a phone call.
toastr was made to be incredibly easy to use. Simply set your custom message, choose a toast length, and press start. After that, toastr will run in the background (but won't affect your battery life!) and anytime that you unlock your screen, it will create a toast message with your text.