Take notes or just sketch out an idea with Evernote’s productivity app, Penultimate. We also have an arcade game that has you swimming through primordial soup, and a retro photo effects app.

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:

Netbot for App.net (iPhone edition) ($4.99 → Free, 10.8 MB): A full-featured App.net client from the creators of Tweetbot. The app’s streamlined interface makes it easy to keep up with your feed and interact with those you follow. Just tap on an update to reply, share, or favorite it. You can configure gestures to save even more time. The app also includes mute filters, iCloud support, Instapaper and Pocket support, the ability to send and receive private messages, and the ability to manage your account. Please keep in mind that you need an App.net account in order to utilize this app.

Netbot for App.net (iPhone edition) is available for free for a limited time. It has a 5-star rating with a total of 204 ratings.

runtastic PRO ($4.99 → Free, 21.8 MB): Whether you run, cycle, hike, skate, or ski, Runtastic Pro can help track and improve your results. This fitness app uses your device’s built-in GPS to record time, distance, speed, and elevation, and then places your position and route on a map. It automatically archives all of this data so you can view how you previously performed. The app also includes the ability to manually input information, the ability to compete against friends, and the ability to share your activities.

runtastic PRO is available for free for a limited time. It has a 4.5-star rating with a total of 3389 ratings.

Universal:

XnRetro ($0.99 → Free, 9.9 MB): Turn your photos into retro works of art with this effects app. You’re able to import any photo from your library or snap a new one in-app. You’re then able to choose from 19 retro effects and layer them with different light effects. You can also adjust the brightness, contrast, and saturation of your photo along with the opacity of each light effect to get different results. When you’re finished, slap a frame over your final creation and share it via Facebook, Twitter, Flickr, or email.

XnRetro is available for free for a limited time. It has a 5-star rating with a total of 9 ratings.

Unknown Orbit ($0.99 → Free, 24.5 MB): Take control of a comet and utilize the planet’s hills and valleys to reach deep space in this unique arcade game. You’re able to tilt to control your comet’s direction, and tap on the screen to make it plummet towards the surface. You want to release your finger on the upslope of the hills to blast into outer space and score the most points. If you mistime your landing, your multiplier will reset. The game includes three levels of difficulty, the ability to recharge your comet by collecting snow, and leaderboards via Game Center.

Unknown Orbit is available for free for a limited time. It has a 4.5-star rating with a total of 15 ratings.

Backbreaker 2: Vengeance ($0.99 → Free, 35.6 MB): Fight your way to the end zone or take it to your opponent in this arcade football game. In Tackle Alley mode, you’re tasked with trying to juke, spin, jump, and sprint your way to the end zone without getting tackled. In Vengeance mode, it’s up to you to take down the ball carrier. The game includes the ability to customize your player and team, and achievements and leaderboards via Game Center.

Backbreaker 2: Vengeance is available for free for a limited time. It has a 4.5-star rating with a total of 13153 ratings.

Album Flow Pro ($2.99 → Free, 2.3 MB): Make your album art flow with this music player. You’re able to browse through your music library by swiping across the album art. Just tap on an album to display its tracks and play music. You can also search for songs, share what you’re listening to, display photos of the artists in the background, learn about your favorite artists, and choose from five patterns with five different colors.

Album Flow Pro is available for free for a limited time. It has a 4-star rating with a total of 139 ratings.

3volution ($0.99 → Free, 51.5 MB): Fling little helpers through the primordial soup to achieve the highest possible score in this tricky arcade game. At the beginning of the game you’re able to fling any one of the three helpers across the screen by tapping and dragging in the direction you want it to go. The goal is to fling one helper between the other two, which counts as a shot. Your next move must involve flinging one of the other two helpers since you can’t use the same one consecutively. If you miss a shot, you lose a life. Lose all three and it’s game over. Try to perform trick moves and gather power-ups to increase your score. The game includes a various forms of opposition, and achievements and leaderboards via Game Center.

3volution is available for free for a limited time. It has a 4.5-star rating with a total of 8 ratings.

iPad:

Penultimate ($0.99 → Free, 41.7 MB): The ultimate handwriting app for iPad. It allows you to take notes or just sketch with the tip of your finger. You’re able to draw on the screen with 10 different ink colors, customize the size of your pen, and undo any of your mistakes. You can choose from multiple paper styles, insert new pages, add images from your library, share your notebooks, and sync your notebooks with Evernote. The app also includes iTunes File Sharing and Dropbox support.

Penultimate is available for free for a limited time. It has a 4-star rating with a total of 11530 ratings.

Netbot for App.net (iPad edition) ($4.99 → Free, 25.1 MB): A full-featured App.net client from the creators of Tweetbot. The app’s streamlined interface makes it easy to keep up with your feed and interact with those you follow. Just tap on an update to reply, share, or favorite it. You can configure gestures to save even more time. The app also includes mute filters, iCloud support, Instapaper and Pocket support, the ability to send and receive private messages, and the ability to manage your account. Please keep in mind that you need an App.net account in order to utilize this app.

Netbot for App.net (iPad edition) is available for free for a limited time. It has a 5-star rating with a total of 76 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.