Jorgenson's Boot-Rash Unguent

I think a good app would be called โ€œTROOPSโ€, where you tap your phone whenever someone was in the army and it goes โ€œThank You For Your Serviceโ„ขโ€. People who say stuff like that a lot are a market ripe for disruption.

It's easy to monetize because the target customer likes novelty, so you can sell a lot of new voices. And what underemployed 20-something wouldn't appreciate a good patronizing from Batman?

And then you have a $4.99/mo Libertyโ€™s Hammer membership where it adds โ€œโ€ฆand God Bless Americaโ„ขโ€ whenever the app talks.