A Facebook app called AtomicAge was created in an effort to raise nuclear weapon proliferation awareness by showing the sometimes surprising number of nuclear weapon detonations since your birthday.
It was nice to see the app only asking for my birth year and month. It obviously wasn’t created to data mine.
The app also has this gem:
“Note: We don’t need to know your exact birthday and we suggest you don’t give your exact birth date to strangers.”
There’s also a really neat (yet scary once you think about it) video created by Hashimoto Isao once you find out your Atomic Age reminiscent of Atari games.

