Peterson Birds of North America is FREE for two days only. It is based on Peterson’s comprehensive bird guide for North America, including 810 birds. Usual price is $15. I don’t know when it started being free, so I don’t know when the price will be up. If you are into birds, or you know someone who likes birds, this is a must have app. It is also a good holiday gift. If you don’t want the person see the app, you can buy it and then hide it. For ideas on how to hide an app on your iPhone/iPAD, visit here.
Update (Mar.23, 2019): The app developer has combined the paid app and the free app into one, and the updated download link below is the free app. You can add more features you need within the app after you download the free app.
If you would like to check it out or purchase it, please use the App Store button provided below. The cost is the same to you, but iGameMom gets a small percentage. Thanks for your support! Note: The button works for all countries.