Was Frustrated with the Competition
Last year when I had to put together an invite for my 40th birthday party I tried out several of the RSVP websites out there. The first premium one I tried was pretty fancy, and I spent awhile wading through all of their options, but in the end they were going to charge me a boatload to just sent out an invite to 40-some people.
Then I went to the older website that everyone uses, and it boggled my mind to see that the whole site was overrun with ads and was a drag to use. The whole UI was outdated and pretty bad.
I started working on the project, knowing I couldn't finish it in time for my party, but maybe next time I would have it ready.
I never quite finished the project, but this year for a Christmas party we were putting together I hacked it together enough to send out the invite with my own software. Half of the content was hardcoded because hadn't finished the editing interface yet.
So with the Christmas event a success, I decided to finish it up enough to launch something.
There are a bunch of features I could add, but as it is, it's a nice way to put together an invite and collect RSVP's that I think could work for a ton of people.