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3. Acceleration plot shows real time before race, instead of reading zero. (Note: This screenshot was taken with a device simulator, so acceleration plot is empty here, but would not be for a real user)was because we wanted users to know exactly what the during-race screen would look like before it actually started.
4. The dragging affordance used (the three dashes on the right of each row) were not as intuitive as we hoped; though again although it is a standard iOS affordance, users did not seem familiar with it.
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2. If there exists no data for the stroke rate/split we grayed out the "Plot" button and replaced the numbers with "- " or "-- : --" respectively. Users found this to be very intuitive and never confused that feedback with lost data (usually it meant their accelerometer or GPS are turned off).
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