After upgrading to iOS6 my reminders app was showing one uncompleted reminder I could not get rid of. Very frustrating, but it turns out it’s rather easy to fix. When iOS 6 updated it hid all local reminder lists, if you had any open reminders in those lists they still contribute to badge count but don’t appear in the app. You have to search to reveal them. Here’s how:
- Search a single letter, I used ‘C’.
- Uncompleted reminders will appear at the top.
- Check them and viola.
Here’s the article I found on how to do it.