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Cool iPhone app lets you acoustically measure distances of up to 25 meters
- quadrix 15y agoCheck out the discussion on Reddit, and grab some promo codes: http://www.reddit.com/r/iphone/comments/m9scx/hello_riphone_it_took_me_200_hours_to_make_this/ http://www.reddit.com/r/iphone/comments/m9scx/hello_riphone_...