From Cozy Apps:
With more free features than any other caption app, Tap That Caption knocks the socks off it's competitors. It's a fun and simple way to share hilarious photo captions on the iPhone.
Other photo caption apps restrict the captions in so many ways.
don't allow panning the caption,
don't allow zooming or panning the photo used,
give a random caption that has nothing to do with the photo chosen.
With 100's of dirty captions, Tap That Caption raises the photo caption app bar by offering these features for free:
six great caption categories to target the type of photo being captioned;
double tap the caption to refresh an unlimited number of times;
create custom captions;
zoom and move the photo;
move the caption around for the perfect position;
share with Facebook, Twitter, Flickr, Tumbler, Dropbox & E-mail.
Tap That Caption is free and subscribes to the "freemium" model. The cost is $0.99 (USD) to add the following features:
scale and rotate your caption,
six different caption fonts,
eight different colors.