Turn your iDevice into your own personal DJ with Zikera's intelligent music player, Groove 2. We also have physics puzzler that requires you to take down Nasty Knights by launching boulders through the air, and a casual game that allows you to play in an Elastic World.
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.
Catapult King ($0.99 → Free, 43.9 MB): Become the king of catapults by smashing the Nasty Knights in this first-person physics puzzler. Aim for the weak points in the structures to try to take them down with your boulders in as few shots as possible. You're able to deploy different power-ups like line of sight and lunar strike to make sure there is no one left standing when the dust has settled. The game includes 64 levels, and achievements and leaderboards via Game Center.
Catapult King is available for free for a limited time. It has a 4-star rating with a total of 586 ratings.
Groove 2 - Music Player ($3.99 → Free, 15.4 MB): This music app turns your iDevice into your own personal DJ. It studies your listening habits to determine your favorite music and create a variety of instant mixes. Your music is also automatically tagged, allowing you to easily discover and listen to specific genres. The app also includes gesture controls, search, the ability to create your own mixes, AirPlay support, Facebook and Twitter integration, and the ability to download missing album artwork, artist photos, and bios.
Groove 2 - Music Player is available for free for a limited time. It has a 4.5-star rating with a total of 567 ratings.
New Puzzle Quizzes ($2.99 → Free, 8.3 MB): A puzzle game that will get your brain firing on all cylinders. It includes 100 hand-crafted puzzles with multiple choice answers. Be sure to choose the correct one to earn a perfect three-star rating. The game also includes hints, portrait and landscape orientation support, iCloud support, and achievements and leaderboards via Game Center.
New Puzzle Quizzes is available for free for a limited time. It has a 5-star rating with a total of 1 ratings.
PhotoCool – Photo Editor, Filters and Effects for Instagram and Facebook ($2.99 → Free, 13.1 MB): A super simple photo editing app. It includes a handful of tools, like crop, straighten, and rotate, which allow you to make precise adjustments to your photo. You can then add a variety of effects and frames to your photo, and fine-tune each one by sliding your finger over the screen. The app also includes the ability to compare your new photo with the original, undo, support for portrait and landscape orientations, and a vast selection of sharing options.
PhotoCool – Photo Editor, Filters and Effects for Instagram and Facebook is available for free for a limited time. It has a 3.5-star rating with a total of 16 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. 
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