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I am working on a project as inspired by a "free idea" by "textrat." The project, dubbed "Sirvair" would use a phone's GPS to convert the phone into a measuring tape. The app would work in the following steps:

  1. Set a constant starting point, which would capture longitude and latitude
  2. As you slide the phone, the end longitude/latitude point changes continuously
  3. An algorithm calculates delta of the starting point and the end point
  4. The same or another algorithm converts delta into millimeters, centimeters, inches, decimeters, feet, yards, and meters

I am entirely willing to build my own algorithm and share it with you via Github or StackExchange Windows Phone and Dvlup (beta), but I wouldn't want to spend the time creating a new algorithm if I knew one of you already had one that you were willing to share with me.

Is anyone else looking for this? Has anyone heard of this? Do you know of any applications that function in a similar way on any scale?

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Welcome to the site. Unfortunately recommendation questions are off-topic for this site. – row1♦ Nov 10 '12 at 4:46
As an aside, civilian GPS is only accurate to about 10 metres at best (even though it has a higher resolution), so you might find that a limiting factor. There are many algorithms, based on differing assumptions, and there are questions about implementing them over on sister site, Stack Overflow – Rowland Shaw♦ Nov 10 '12 at 17:20

closed as off topic by row1♦ Nov 10 '12 at 4:46

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