Whether they're work related or not....

I wonder how many of you are about to laugh at me. I just got my first smartphone. (OMG!!!) Yeah. Work issued iPhone SE.

Aside from things like Sonos/Nuvo, alarm.com, etc, are there any other apps, especially free ones, that help you in any way on the job? What about apps that are just cool and/or fun to have?

Thanks!