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Turn your phone into a bat

iTunes
AVAILABLE FOR

There are plenty of ways to use your smartphone as a measuring tool. This one is probably the coolest.

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The amazing Acoustic Ruler Pro uses sound reflection to measure distances. It similar to the way bats detect bugs and obstacle.

There are two modes. If you have two iPhones, you can measure distances up to 82 feet. With one iPhone you can measure distances just under 4 feet.

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