Out of curiosity, other than the trivial use cases of smartphone (digital swiss army knife as my FIL calls it) what else are you using it for?
My examples:
Sky Map - Point your phone at the sky and it will show you the names of the stars, planets and other celestial objects that you can see.
Sound Meter - uses your built-in microphone to measure sound volume in decibels
Chwazi Finger Chooser - Random Finger Chooser (before anyone asks it helps me to decide random stuff with the kids, like who takes the first turn in any game)
My examples: Sky Map - Point your phone at the sky and it will show you the names of the stars, planets and other celestial objects that you can see.
Sound Meter - uses your built-in microphone to measure sound volume in decibels
Chwazi Finger Chooser - Random Finger Chooser (before anyone asks it helps me to decide random stuff with the kids, like who takes the first turn in any game)