I'm a "open source guy". Very picky to pay of Anything.

I use the mentioned app with my Lady every day because it works so well on her iPhone too. The easy of sending photoes is just pure awesome. Never failed (during one year). It works so well I don't hesitate a second to pay a dollar of it when it asks for it.

Ps. Drunk in a bar and a regular guy next me agrees who did not agree on punch of other stuff.