Final

The initial screen is a heart shape in white color. This indicates a blank shape waiting to be filled. As each person’s activity level increases (i.e. walk more and more steps), the half of the heart on his/her behalf will begin to fill up. The 2 sides are differentiated with red and blue colors. The screens are synced up on the 2 people’s wearables as they progress. When the 2 people both finish, the heart is complete, and a screen of rainbow-colored heart is shown as a reward. Then the white heart becomes a yellow heart waiting to be filled, which is an indication of next level. There are total of 3 levels of white, yellow, and green to encourage the users to move onto next levels.