Are you going to pick up a friend and want to notify her 5 or 10 minutes in advance that you are coming, so that you dont have to wait when you arrive? Geotification app can do it for you! Prepare message, choose location, set up a notification time and you are good to go. Geotification will automatically send an sms to a person waiting for you to come.
IMPORTANT! Because of iOS restrictions Geotification uses 3rd party number to send a message.