Manage your book collection and save your favorite quotes with ClipBook. We also have a travel app that will help you keep up with and convert currencies, and an action game from Chillingo set in the wild west.

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:

Geomaster ($0.99 → Free, 61.8 MB): Put your geography knowledge to the test with this educational game. The challenges consist of everything from pointing out capitals of the world to matching flags to countries. Each challenge provides you with a limited amount of time to discover the correct answer, and your score will be based on the amount of time left and your accuracy. The game includes a total of 14 challenges, and achievements and leaderboards via Game Center.

Geomaster is available for free today only (05/18). It has a 4-star rating with a total of 50 ratings.

ClipBook – BookMarker & Sentence Collector ($0.99 → Free, 17.9 MB): Manage your book collection and save your favorite quotes with this productivity app. When adding a book to your collection you must title it, define the author and the amount of pages. You can then drag the slider on the left side of the screen to mark the page you are on. If you find a memorable quote or image you want to save, just tap the pin to record it. Anything you record can be shared with your friends via Facebook or Twitter. You can also send clips off to Evernote.

ClipBook – BookMarker & Sentence Collector is available for free today only (05/18). It has a 4-star rating with a total of 20 ratings.

MiniatureCam – TiltShift Generator ($0.99 → Free, 23.2 MB): This photography app allows you to make the world around you appear a little smaller. The app utilizes a blur effect to simulate a shallow depth of field and make your subject appear miniature. It includes photo and video modes, three focus options, the ability to manually change your focal point, speed control, and the ability to share your creations via Facebook, Twitter, or email.

MiniatureCam – TiltShift Generator is available for free today only (05/18). It has a 4-star rating with a total of 86 ratings.

Running with Friends ($1.99 → Free, 43.8 MB): This weekend only, get $1.99 worth of gems! Gems can be used to start where you left off, purchase power-ups, and customize your character.

The latest “With Friends” competition has commenced, and it’s a bullseye for endless running game fans. As you run down the streets of Pamplona, Spain, you’ll have to not only outrun bulls, but also avoid gaps in the streets, charging bulls on scooters, hairpin turns, barrels, and other dangerous obstacles. All of your actions are controlled via swipe gestures, allowing you to make timely and precise maneuvers. While you’re at it, you’ll also want to collect stars because they will increase your score and help you best your friends. Each game includes a total of three rounds, so even if you stumble during one, you’ll have a chance to redeem yourself.

Running with Friends is available for free for a limited time. It has a 4.5-star rating with a total of 6314 ratings.

Gravity Guy ($0.99 → Free, 19.7 MB): You’re going to flip for this fast-paced platformer. A brave masked crusader has been imprisoned for defying the laws of gravity. Help him break free from his captors by manipulating gravity. Just tap on the screen to flip gravity and clear obstacles. You’re able to utilize Gravity Guy’s slow motion ability when things get tough. The game includes a story mode with two chapters, an endless mode, online multiplayer, and achievements and leaderboards via Game Center.

Gravity Guy is available for free for a limited time. It has a 4.5-star rating with a total of 1244 ratings.

eCurrency – Currency Converter ($0.99 → Free, 8.4 MB): Keep up with those ever-changing currency exchange rates with this travel app. It automatically updates exchange rates on launch, so you won’t ever have to worry if your conversions are correct. Just type in a value and it will be instantly converted to the currency of your choice. You’re able to set up to three currency conversions as your favorites for quick access. The app includes 190 currencies to choose from, search, custom exchange rate support, and detailed charts that display historical exchange rate data.

eCurrency – Currency Converter is available for free for a limited time. It has a 4-star rating with a total of 886 ratings.

Universal:

BLACKJACK (5 GAMES) ($0.99 → Free, 35.8 MB): Sit back, relax, and enjoy a few hands of blackjack from the comfort of your own home with this casino game. You’re able to choose from five different types of blackjack: multi-hand, switch, surrender, face up 21, and pontoon. Each games includes payoff information, so you’ll always know exactly what you’re getting into. You’re also able to compete against friends and strangers via the Game Center leaderboards and earn achievements.

BLACKJACK (5 GAMES) is available for free for a limited time. It has a 4-star rating with a total of 238 ratings.

Cowboy Guns HD ($0.99 → Free, 60.3 MB): Play as a lone cowboy and bring peace to your land by wiping out The Crimson Jackal gang in this action game from Chillingo. You’re able to control your cowboy via touch gestures or dual joysticks. Take on missions and collect bounties for successfully completing them. Your loot can be used to purchase new weapons and upgrade your current arsenal. The game includes three modes, four boss battles, and achievements via Game Center.

Cowboy Guns HD is available for free for a limited time. It has a 4-star rating with a total of 79 ratings.

iPad:

Gravity Guy HD ($2.99 → Free, 33.2 MB): You’re going to flip for this fast-paced platformer. A brave masked crusader has been imprisoned for defying the laws of gravity. Help him break free from his captors by manipulating gravity. Just tap on the screen to flip gravity and clear obstacles. You’re able to utilize Gravity Guy’s slow motion ability when things get tough. The game includes a story mode with two chapters, an endless mode, online multiplayer, and achievements and leaderboards via Game Center.

Gravity Guy HD is available for free for a limited time. It has a 4.5-star rating with a total of 457 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.