Enjoy getting up in the morning!
1. Wake up at the same time with your lover and exchange messages
2. You and your friends can wake each other up on the day of a trip
3. Communicate with your family living apart
Alarm Everyone website
You will see who woke up and who has not on the app. It has its own texting feature to greet.
The application is available for free. Although it is by a Japanese company, only English version is provided for now. Android version is being planned as well.
Here is a demo movie,
via Modern Syntax [J]