What app has these fonts? (iPhone)?

I have his photo with various fonts here> http://adriana-quinn.tumblr.com/image/45898205899
And NOBODY will tell me what app they use! It's a bit rude, I would say, and I've been looking for weeks! If you know Please tell me, these are some of my favorite fonts.

Please check:
http://www.whatfontis.com/YoungFolks.font?text=chibi%20store
http://www.whatfontis.com/The-Mocking-Bird.font?text=we%20are%20closing
http://www.whatfontis.com/KBLimeLight.font?text=We%20are%20now
Alex