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Reply to "Measurement iOS App"

Dougie,
One way to make this a very attractive app is to provide functions that people can't do with spreadsheets. One area I see that you might be able to do this is with GPS functionality. Of course you've already done GPS locations for mile/km marks, which is great, but another idea I thought of was to provide alerts when you get within 100 meters or so of mile or km marks. You could do a distance calculation based on the GPS info, or hopefully, that function is already available to you. You could have the rider press the "3-mile" button when they arrive at that mark so the distance calculation could be "re-zeroed" and made accurate again even if it goes bad for a while due to tall buildings, rider freezing the front wheel and moving his bike, etc. The audio cue is key to this. When I miss mile marks it's because I forget to check my counter or GPS, so something reminding me to check it would be helpful.

Elevations on my GPS are not very reliable, especially absolute elevations. But even for relative elevations I often see significant differences between GPS and Google Earth.
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