What are your go to iPhone or android apps?

There are some essential apps that all youth pastors should have.  Every time I go to a conference I like to see what other apps youth pastors are using.  There are awesome apps out there, the only problem is how can you find all the apps?  According to Apple, there are 1.3 million apps in the app store.  That is staggering.

Here are some apps that I love, and that I use daily.