GeoMessage is an app that'll automate sending sms messages to friends and family based on your location.
You can set up geographic areas based on latitude and longitude, address, or current location. Each location can send a text message to the person you designate. There are options for time of day restrictions, limiting how frequently the message can be sent, and you can customize your own message however you'd like.
-When you get to work and want to let your significant other know (but you don't want to have to remember)
-When you want to let your friends know you've just gotten to the party
-Telling your parents you safely made it to school
If there is interest, I'll be adding features and expanding the functionality. Please contact me if you notice any problems with the app. Feedback is always appreciated.