Comment Swiss Army knife... (Score 1) 205
I get a lot of apps to use as blades in a Swiss Army knife -- you know, you have blades you hardly ever use on your knife, but when you need them you're glad they're there.
I don't need a flashlight every day, but I have a flashlight app on my iPhone "just in case." Same for a unit converter app. Many of the travel apps will not get used every day, but will likely see use for the few times a year I travel.