Debating wether to use CI for a web app

[eluser]WanWizard[/eluser]
Don't let things like MVC scare you off. They are there to make your life easier.

Download CI, browse through the manual to get an idea of how it works, and check out the Welcome controller.

If you're capable of writing PHP apps from scratch, CI is a walk in the park, and allows you to work on the fun stuff (your app) instead of working on all the housekeeping...