Today’s apps gone free: Math Duel, CameXtra, Poly and more

Compete in math duels with friends and family, take perfect photos, and turn your favorite photos into polygonal art with today’s collection of apps and games.

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:

CameXtra+HDR ($0.99 → Free, 7.4 MB): Turn your iDevice into a full-fledged photo studio with CameXtra. It’s for iPhoneographers who want to cut down on the amount of apps they have.

CameXtra truly has it all. It provides you with full control over your shots thanks to the ability to manually adjust focus, exposure, saturation, hue, brightness, contrast, and ISO. The camera also includes a burst mode, stabilizer, golden line guides and a level line, and a timer. All of the included effects, filters, borders, and mono colors can be applied to your feed in real-time. If that wasn’t enough, it includes the ability to record and edit video.

CameXtra+HDR is available for free for a limited time. It has a 4.5-star rating with a total of 15 ratings.

Tower of Fortune ($0.99 → Free, 8.6 MB): A retro-style RPG with a nifty slot machine mechanic. It’s for fans of the RPG genre who also enjoy one-button gameplay.

Play as a retired hero who is forced to draw his sword once again when his daughter is taken by an unknown power. Spin the wheel to battle opponents, earn gold, and obtain special items. The game includes 39 different enemies, 37 types of equipment, 39 combat quests, 12 tavern quests, and three different endings.

Tower of Fortune is available for free for a limited time. It has a 4.5-star rating with a total of 151 ratings.

Universal:

Math Duel – Two Player Split Screen Mathematical Game for Kids and Adults Training – Addition, Subtraction, Multiplication and Division! ($2.99 → Free, 8.6 MB): Challenge friends and family to a Math Duel with this educational game. It’s great for a classroom setting or a family game night.

The screen is split in half, with a player at each end of the iPad. You must try to solve each math problem presented to you before your opponent does to push the meter in your favor. Math Duel is highly customizable, allowing people of all ages to participate. You’re also now able to play alone in case you don’t have someone around to join you. Customization options include the ability to enable and disable types of problems, define the largest number and number of terms, and change colors.

Math Duel – Two Player Split Screen Mathematical Game for Kids and Adults Training – Addition, Subtraction, Multiplication and Division! is available for free for a limited time. It has a 4-star rating with a total of 121 ratings.

GrooveMaker 2 ($4.99 → Free, 72.4 MB): Bust some beats with GrooveMaker 2. It’s for aspiring DJs.

GrooveMaker 2 allows anyone to get great results thanks to its patented “groove generator” technology. The app includes pre-arranged sets of loops, which are called songs, that always sound great together. You’re able to mix them however you wish using the matrix-style interface, and apply FX with the automation and touch pad interface. The app includes loads of customization options, a real-time recorder, iRing and iRig support, and the ability to import audio files.

GrooveMaker 2 is available for free for a limited time. It has a 3.5-star rating with a total of 22 ratings.

iPad:

Poly™ ($0.99 → Free, 15.9 MB): Poly will turn your photos into beautiful polygonal art. It’s for those who enjoy abstract art.

Poly is inspired by triangulation, the mathematical process invented by Boris Delaunay in 1934. The process reduces your photo down to its essentials, creating a geometric array of colors. Simply take a photo from within the app or import one from your library, and start tapping to add points. Points can be erased at any time, and you can undo your previous tap. The app also includes four rendering styles, and the ability to blend the image.

Poly™ is available for free for a limited time. It has a 3-star rating with a total of 38 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.