Favourite Photography Apps?

[WillNicholls]

There are plenty of photographic apps out there, but which are your favourites?
I don't just mean photo-sharing apps, but ones that help you in the field. For example, the Photographer's Empheris is popular between landscape photographers.

 

[ianp5a]

RainAlarm shows the rain radar nicely. And beeps when a storm is approaching.
AIX Weather Widget shows a graph of the next 24 hours temperature, cloud and rain. Put it on your home screen.

 

[WillNicholls]

Thanks !
Any other favourites anyone ?

 

[LongLensPhotography]

Living in the sun and Tide prediction are the two I find useful. Sometimes flashlight comes useful for light painting.

 

[twhite87]

I use photo stitch with my eye fi card to view images on the go. Fantastic app. And of course the TP app.