For a limited time you can snatch a free download of AirPano Travel Book for iOS through the Apple Store App. This offer marks the first time we've seen AirPano available for free. As a pricing comparison, it's usually priced between $2.99 and $3.99, but has been as high as $4.99 and as low as $0.99.

AirPano Travel Book is a collection of unique spherical photo panoramas of the most amazing places in the world with a bird's eye view. AirPano takes you on an exciting journey with a real-life presence at a photographic location. The aerial panorama technology allows viewers to soar in the sky above Niagara Falls, the famous Taj Mahal, nightlife in Las Vegas, and the fantastic beaches of Dominican Republic.

AirPano was featured as part of the App Store's 'Best of 2014' list and in Apple's 'Everything Changes with iPad' commercial.

Unlike typical app price drops, you can't just fire up the App Store to start downloading this deal. Instead, you'll need to do the following: Read more of this post