The Knott App
I have just seen my best friend created an app from a app called 'Appy Couple' and my idea is to transfer the site I have already created on The Knot into a mobile app.
I have no idea if that is a feasible thing to do for you but it would be awesome to be able to offer not only a free website, but a way to have it as an app seamlessly. The app she showed me, offered more choices on the RSVP front so I suggest for you to have a look at it.
Good luck and if you would like to contact me feel free.
This is a great suggestion. I will be sure to pass this along to our Product team that works with our mobile features for their consideration.
Enjoy your planning!