Go on a sonic journey with today's AppBump featured app, AmbiScience 300. We also have a distance game that allows you to ride an endless wave, and a productivity app that allows you to view and edit PDF files while on the go.
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.
Death Rider ($0.99 → Free, 17.3 MB): Speed ahead in your machine gun-equipped Death Rider for as long as possible in this arcade game. You're able to steer your vehicle via tilt or touch, and you can fire your weapons via on-screen buttons. Take out your opponents by blasting them to bits or ramming them off of the road to earn points. Grab coins along the way to unlock new vehicles, maps, and upgrades. The game includes 10 vehicles, and leaderboards via Game Center.
Death Rider is available for free for a limited time. It has a 4.5-star rating with a total of 4270 ratings.
300 Sleep & Relax Sounds :: Melodies :: Brainwaves | AmbiScience™ ($2.99 → Free, 484.6 MB): Go on a sonic journey with this music app. It's able to attune your brain to desired states of mind by playing binaural and isochronic tones. The app includes more than 50 ambient music loops, 40 nature and sound loops, 190 interval sound hits, 19 entrainment programs, the ability to create your own custom programs, a timer with fade, repeating alarms with snooze, and a full tutorial.
300 Sleep & Relax Sounds :: Melodies :: Brainwaves | AmbiScience™ is available for free for a limited time. It has a 5-star rating with a total of 21 ratings.
Tips for iPhone - Tricks & Secrets ($0.99 → Free, 16.7 MB): Learn a thing or two about your new iPhone with this how-to guide. You're able to browse through tips just by swiping left or right on the screen. Tap or swipe upwards on the red banner to view a detailed description. You can add comments to tips, save them to your favorites, vote on them, and share them via Twitter, Facebook, or email. The app also includes search, browsable categories, and a top tips list.
Tips for iPhone - Tricks & Secrets is available for free for a limited time. It has a 4-star rating with a total of 778 ratings.
IntelliDrink - BAC Calculator ($0.99 → Free, 9.9 MB): Keep tabs on your blood-alcohol content level during a night out on the town with this lifestyle app. Before heading out, you need to create a personal profile that includes your age, height, weight, and gender. Then just record every drink you consume and watch as your BAC level rises. The app utilizes a complex algorithm to calculate what your BAC level is and will be in the future. It also includes a guided tour, the ability to create and save multiple profiles, the ability to set a BAC alarm, a customizable drink list, and drink history.
IntelliDrink - BAC Calculator is available for free for a limited time. It has a 4.5-star rating with a total of 42 ratings.
Sleep Pillow Baby Lullaby ($0.99 → Free, 66.4 MB): A parent's dream come true. This music app features a collection of 27 high quality naturally recorded sounds that should help put your baby, and you, right to sleep. You can also add sounds to your list of favorites for quick access. The app includes a sleep timer with fade, background audio support, and high quality nature images.
Sleep Pillow Baby Lullaby is available for free for a limited time. It has a 4.5-star rating with a total of 59 ratings.
Foxit Mobile PDF ($2.99 → Free, 27.8 MB): This productivity app allows you to view, manage, and edit PDF files while on the go. You're able to add PDF files via Wi-Fi, email, Mobile Safari, or iTunes File Sharing. You can then view, annotate, bookmark, and edit your PDF files in a variety of ways thanks to the vast selection of tools. The app also includes the ability to organize files in folders, undo and redo, password protection, and the ability to remember your last reading position.
Foxit Mobile PDF is available for free for a limited time. It has a 4-star rating with a total of 14 ratings.
Infinite Surf ($0.99 → Free, 23.8 MB): Sit back, relax, and catch a wave in this endless distance game. You're able to control your surf board just by tilting your device. As you cruise along, you must try to grab all of the coins that cross your path. If you miss too many, you'll lose your balance and your dignity. You can also grab multipliers and power-ups during your ride to help increase your score. The game includes four upgradable surfboards with different attributes, three waves to ride, and achievements and leaderboards via Game Center.
Infinite Surf is available for free for a limited time. It has a 4-star rating with a total of 27 ratings.
Don't Run With a Plasma Sword ($1.99 → Free, 81.2 MB): A running game that features a sci-fi story and RPG elements. Run through all kinds of colorful alien environments avoiding obstacles by jumping over and sliding under them, and slice up aliens with your plasma sword to complete each level. The game includes an experience point system, allowing you to upgrade your character in a variety of ways. It also includes two modes, five environments, boss battles, and achievements and leaderboards via Game Center.
Don't Run With a Plasma Sword is available for free for a limited time. It has a 4.5-star rating with a total of 606 ratings.
Bungee Birds ($0.99 → Free, 25.0 MB): This casual game requires you to launch little birds into the air and then get them to land on their matching flag to reclaim their spot on the bungee. Pull down and release the bungee to fling the birds into the air. You are able to control their horizontal movements the moment they begin to float back down to the bungee by tilting your device. Try to get them to land on their matching flag while also collecting stars on your way down to score the most points. The game includes 24 levels.
Bungee Birds is available for free today only (09/21). It has a 4-star rating with a total of 25 ratings.
Flockwork: Addictive Sheep Herding! ($0.99 → Free, 101.6 MB): Guide entire flocks of sheep back into their pens in this puzzle game. As you drag your finger across the screen the sheep will follow. You want to try to collect all of the stars in each level and get the sheep to their pens as quickly as possible. There is one little catch, however. All of the sheep move in unison, so you'll have to do some planning and even some ricocheting to get them all back. The game includes four environments, 95 levels, and achievements and leaderboards via Game Center.
Flockwork: Addictive Sheep Herding! is available for free for a limited time. It has a 4.5-star rating with a total of 65 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.
