Snapchat is fun, fast, and super-popular, but it's not for everyone all the time. And that's okay.
If you decide that you don't want to use Snapchat any more, you can permanently delete your account in just a few easy steps. Unfortunately, you can't delete your account right from the Snapchat app for iPhone, but you can use Safari or any web browser on any computer. Deleting your account not only makes sure you won't see any new snaps that might be coming in, but that no new snaps can come in.
Full story from the iMore Blog...