On the app store there are so many productivity apps that you can download to get you through your day.
Right now I only use two apps to help me out everyday. First one is Evernote which you can download for free on the app store or play store. I use Evernote because it’s one of the best app for taking notes and how it works great with other devices as well. Second app I use is Timeful which is a calendar reminder app is great because not only does it look good on ios 8. It also mixes with the stock calendar on your iPhone.