HueMaster offers you several features to improve the value of your Hue bulbs. It is you Hue tool box.
In the first version you get this feature:
BabyPhone:
Use your device (iPhone/iPod touch/iPad) as BabyPhone. Place your device near to the source of noises (for example your baby) and start recording. Your Hue bulb begins to display the level of noises and flashes red when it becomes loud. You can guard the sleep of you baby in the next room without having interferences.
More features in development.