Do you use a todo list app? What could be better about it?

I noticed people around me weren't really using todo list apps so I'm trying to build one that actually works for people. If you use a todo list app, I would love to hear what isn't working for you and how it could be better.

Or direct feedback on my app as it currently is would be great: 3 Things (https://play.google.com/store/apps/details?id=com.compscieddy.threethings)