Challenge: Create an app that improves productivity.
Time’s Up is an app that allows you to select any app on your phone and limit how much time you can spend on that app each day. Select the app, and set your time limit. Once your time limit is up you, you’re locked out of the app. You can restore your ability to use the app by waiting 4 hours, climbing 5 sets of stairs, or by walking 1,000 steps.