What's the best iPhone app that can remind me to take breaks and drink more water?

This bottle was actually the result of a Startup Weekend (which I think is totally rad) and syncs with an app that both reminds you to drink water and tracks the amount of water you drink. Plus, female founders! 😍

Actually helped me. Have tried a bunch. This app actually changed my habits and I'm healthier for it. That's powerful.

This is a simple app to help log your water intake and set reminders to stay hydrated. I like its simplicity.

I actually use the sister app, Productive, which is a little more about building habits, but this app is about “reminding you to do more of the things that make you happy.”