Learn about more than 800 species of North American birds with Appweavers’ reference app, Peterson Birds of North America. We also have a classic arcade game, and a Lemmings-style puzzle game.

All app prices are subject to change at any time and without notice regardless of stated free duration. Price changes are solely under the control of the developers.

iPhone:

Spirits ($2.99 → Free, 47.5 MB): A Lemmings-style puzzle game where you must guide spirits towards a swirl. You’re able to sacrifice spirits to have them perform different actions like build bridges of leaves, create blowing clouds, dig tunnels, or block wind. You’ll want to save as many spirits as possible while picking up plants to move up the online leaderboards. The game features 47 hand-drawn levels, and achievements via Game Center.

Spirits is available for free for a limited time. It has a 4-star rating with a total of 644 ratings.

Are You Quick Enough? 2 Pro – The Ultimate Reaction Test ($0.99 → Free, 25.2 MB): A collection of more than 80 challenges that will put your reaction skills to the test. Each challenge is unique in its own way, and you have to achieve at least a one-star rating to move on to the next. If you simply can’t, you can use quick passes. The game also includes two level packs, stat tracking, and achievements and leaderboards via Game Center.

Are You Quick Enough? 2 Pro – The Ultimate Reaction Test is available for free for a limited time. It has a 5-star rating with a total of 6 ratings.

VOT: Voice To-Dos – Jot with Voice ($1.99 → Free, 26.5 MB): Create to-do lists with your voice with this productivity app. Just tap the large “VOT” button at the bottom of the screen to instantly start recording a to-do. When you’re finished recording, you’ll have the opportunity to assign an alert time. You can then add a title, priority, and note if you’d like. To-dos can be organized by date, manually, or by complete. The app also includes 19 alert tones to choose from, a calendar view, and an auto-stop record option.

VOT: Voice To-Dos – Jot with Voice is available for free today only (11/08). It has a 5-star rating with a total of 5 ratings.

High Caliber Hunting ($0.99 → Free, 108.5 MB): EA’s hunting simulation game has you tracking down and firing upon over 20 different types of wild game including deer, bear, moose, boar, and smaller critters like fox and rabbit. You’re able to hunt in up to six different locations during dawn, daytime, and dusk. The game also includes brand-name firearms, quick play and pass ‘n play modes, and a bullet-cam view.

High Caliber Hunting is available for free for a limited time. It has a 4-star rating with a total of 2204 ratings.

Birthday Calendar by Davia ($0.99 → Free, 3.4 MB): Never forget another birthday again with this utility app. You’re able to import your friends’ birthdays from Facebook or Contacts, or you can manually generate them. The app will then alert you whenever a birthday from your list is coming up. You can also send a birthday message directly from the app to Facebook or via SMS. The app also includes a calendar view, and customizable alerts.

Birthday Calendar by Davia is available for free for a limited time. It has a 4-star rating with a total of 655 ratings.

Universal:

Centipede®: Origins ($0.99 → Free, 48.9 MB): Stop the vile creepy crawlies from destroying your entire garden in this updated version of Atari’s classic arcade game, Centipede. Tap and drag your finger across the screen to control your arrow-firing gnome. Take out every last bug before they reach the bottom of the screen to move on to the next wave. Purchase new weapons and upgrade your arsenal with the coins earned during battle to strengthen your forces. The game includes four environments, loads of unlockable content, iCloud support, and achievements and leaderboards via Game Center.

Centipede®: Origins is available for free for a limited time. It has a 4-star rating with a total of 183 ratings.

ZOOKEEPER DX Touch Edition ($0.99 → Free, 14.9 MB): Try to return all of the escaped zoo animals to their cages in this matching game. All you have to do is match three or more of the same type of animal to capture it. You need to achieve the target number of animals before time expires to move on to the next stage. The game includes two modes, 30 levels, and leaderboards via Game Center.

ZOOKEEPER DX Touch Edition is available for free for a limited time. It has a 4-star rating with a total of 77 ratings.

Peterson Birds of North America ($0.99 → Free, 579.1 MB): Learn all about the birds of North America with this official Peterson reference app. It includes illustrations, bird songs, range maps, and nest photos for more than 800 species of North American birds. You’re able to browse birds alphabetically by group, taxonomy, or species, or you can search by name. The app also allows you to save sightings, compare species, and discover new ways to attract birds and what to feed them.

Peterson Birds of North America is available for free today only (11/08). It has a 4-star rating with a total of 190 ratings.

Meon ($0.99 → Free, 24.8 MB): This puzzle game requires you to light up Meons by moving a light source while utilizing color-changing and reflection tools. The game includes 120 levels, two modes, and achievements and leaderboards via Game Center.

Meon is available for free for a limited time. It has a 4.5-star rating with a total of 638 ratings.

Aerox ($1.99 → Free, 23.9 MB): An absolutely gorgeous ball-rolling puzzle game. Guide a ball up, over, and around a variety of obstacles to make your way to the exit as quickly as possible just by tilting your iDevice. You can also swipe across the screen to change the camera angle and get a better look at the world around you. The game includes 30 levels, five unlockable ball skins, and achievements and leaderboards via Game Center.

Aerox is available for free for a limited time. It has a 4-star rating with a total of 487 ratings.

That concludes today’s issue of Apps Gone Free. If you like staying on top of these daily deals, don’t forget to check out our free AppsGoneFree app. It provides all the deals each day, and even an archive of past deals that are still active.

Developers:

If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

  • It must have at least a three-star average rating at the time it goes free.
  • The app must not have been free numerous times (3+) over the last six months.
  • The free version of your app must not include ads.

To submit an app, simply send a request to tyler@appadvice.com with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when and for how long you intend to offer the app for free, and anything else you would like to share. We will take it from there.