San Francisco, California – Appweavers Inc., developer of the Peterson field guide series of mobile apps for iPhone, iPod touch, and iPad, is celebrating the Labor Day Weekend with a $0.99 sale on their recently updated flagship app, Peterson Birds – A Field Guide to Birds of North America. The award-winning Peterson Birds app is based on the best-selling book, Peterson Field Guide to Birds of North America, and features Roger Tory Peterson’s breathtakingly beautiful illustrations, along with maps, details, and birdsongs. The 99 sale represents a 90 percent discount on the $14.99 full retail price of the app.

“Labor Day Weekend traditionally marks the end of summer,” said Nigel Hall, founder of Appweavers. “But it also heralds the beginning of fall migration, a time when hundreds of migratory species of birds from all across North America head south for the winter. What better time to download the best-selling Peterson app and discover birds you wouldn’t normally see visiting your neighborhood.”

Designed for ease of use and accessibility, Peterson field guides have introduced generations to the beauty of the North American natural environment. The Peterson Birds app is modelled on these guides and features detailed information from eight Peterson field guide books.

The Peterson Birds app is designed to help you quickly identify birds. Similar looking species are displayed side by side, for fast visual comparison. A tap on the screen shows range maps for the similar species, so you can see if a bird is likely to be found in your neighborhood. And a tap on each species illustration plays its song, letting you compare how different birds sound.

In addition to the conventional information found in a field guide book, the Peterson app lets you mark birds you’ve seen off a checklist, record sightings with notes, add your own photos, and reorganize the way the guide looks to truly make it your own. The app provides indexes for quick reference, search functions for filtering the 800 plus birds included in the app, and a wealth of additional detailed information.

The Peterson Birds app $0.99 USD Labor Day Weekend sale begins on Saturday August, 31, 2013 and ends Tuesday September 3rd, 2013. Peterson Birds runs on Apple’s iPhone, iPod touch, and iPad devices and is optimized for retina displays and the larger screen of the iPhone 5.

Peterson Birds of North America, Peterson Birds Pocket Edition, and the free Peterson Backyard Birds of North America are developed by Appweavers, Inc. in California, using content licensed from Houghton Mifflin Harcourt, publishers of the Peterson field guide series of books.

Device Requirements:
* iPhone, iPod touch and iPad
* Requires iOS 5.1 or later
* This app is optimized for iPhone 5
* 1.3 MB

Pricing and Availability:
Peterson Birds 1.3 is only $0.99 USD (or equivalent amount in other currencies) Labor Day Weekend and available worldwide exclusively through the App Store in the Reference category.

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Peterson Birds 1.3
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Appweavers is an award-winning San Francisco Bay Area software developer, with a focus on outdoors applications for mobile computing devices. The company has a multi-product licensing agreement with Houghton Mifflin Harcourt for development of mobile apps based on the highly respected Peterson Field Guide series of books. Appweavers founder Nigel Hall has extensive experience with outdoors applications for the iPhone and iPad. Copyright (C) 2013 Appweavers. All Rights Reserved. Apple, the Apple logo, iPhone, iPod and iPad are registered trademarks of Apple Inc. in the U.S. and/or other countries.

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