After testing with peers, I made some design changes:
1. Seperate the App to 2 mode: game mode on/ game mode off
2. Grey out the game button in main view when game mode is off
3. Grey out the availability of using reward in reward view when game mode is off.
4. USE lines between bottle list in record view instead of button look blocks.
5. Show the game view directly when tapping “Go to App” in long-look notification.
6. Use short cut: Force Tap in game view to open up the reward view.
This paper prototype is very special for me. Since there is no existing prototyping software supporting Apple Watch frames, and no one has a real Apple Watch now, I decide to make it a paper prototype and cut the paper with watch belts. The result is pretty cool, and my peers can pretend wearing a watch more natural than putting a phone on their carpus. I think no matter paper or digital, a good prototype should mimic the real context as close as possible in order to get natural feedbacks.