Photo Printing App with NO Accounts!

I'm so sick of trying to print a few photos and having every product under the sun shoved down my throat. I'm a dad that just wants to print a few things from time to time, but seems I have to either go into the store or create accounts everywhere. Then I tried Picta, which made me pay twice, lol, honestly.

Looking for an easy to use app that lets me print things on the go and fast. Ideal would be something my friends and I could use to remember a good trip, hit print and be able to stop at a store to get them on the way home. The store websites just have so much going on, takes too long to find what I need.