GPS navigation device maker TomTom International released its first iPhone application today, making good on a June promise when an executive touted the software at Apple's annual developers conference.

The $99.99 turn-by-turn navigation software for the U.S. and Canada was posted to the App Store on Apple's iTunes earlier Monday. Other versions with maps for Australia, New Zealand and Western Europe were also launched today at prices ranging from $79.99 to $139.99.

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