* AAC supports
* Silent camera
* Passcode lock
* Various attachment format (audio, image, text)
* Location and weather info attached automatically
* Text and Date searching
* Cluster Map
* Audio tag support
* App Widget support
* Record your trip with your voice, photos and messages.
* Record a seminar with photos of blackboard.
* Record your daily life.
* Record your thoughts.
Please feel free to try your own variations. :^)