For a quick, simple app that's primarily used to create, edit and display lists, sure. There are a lot of apps that fit that model. For something more complicated, probably not. I'd certainly consider Ruby, but Rails seems like it would be more of a burden than a help.

Note that I've only used Rails to make a couple quick, simple apps that are primarily used to create, edit nad display lists. When I had the opportunity to use it for something more complicated, I went with CL/TBNL/CL-WHO/CLSQL and never looked back.