Play as a brave gnome and wage war against disgusting insects in Atari’s Centipede: Origins. We also have an endless distance game that requires you to outrun a little girl, and a powerful travel 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:

Loud Mouth ($0.99 → Free, 14.1 MB): An entertainment app that allows you to speak your mind. Pick from over 100 pre-recorded sayings, and Loud Mouth will speak them in his own unique way. You can alter the speed and pitch of Loud Mouth’s voice to really get your point across. If you are in the mood to speak yourself, you can choose to record your own clip and Loud Mouth will repeat your every word.

Loud Mouth is available for free for a limited time. It has a 4-star rating with a total of 56 ratings.

DreamMachine Pro ($2.99 → Free, 55.3 MB): Take control of your dreams with this health and fitness app. Choose from any one of the seven built-in dream presets, and then just put your iDevice on your bed. The app will determine when to play certain sound files based on your sleep patterns. It also includes a sleep timer, sleep graph, and the ability to customize each dream preset.

DreamMachine Pro is available for free for a limited time. It has a 3.5-star rating with a total of 11 ratings.

Doodle Notes ($0.99 → Free, 14.1 MB): A casual arcade game that has you tapping notes to make music. Notes enter from all sides of the screen, and you must tap on them before they exit. Two different types of rests will also randomly enter the mix, but you must avoid them at all costs. The game includes combo bonuses, six instruments to unlock, and achievements and leaderboards via Game Center.

Doodle Notes is available for free for a limited time. It has a 4.5-star rating with a total of 26 ratings.

Signature for PDF ($1.99 → Free, 3.4 MB): A productivity app that allows you to add text or your signature to PDFs. You’re able to import PDFs from your email, over Wi-Fi, or via iTunes FIle Sharing. You can then add a new signature or use one you already created, and place it anywhere on the document by tapping and dragging. The app includes the ability to add hand drawn signatures or typed text, five colors to choose from, and the ability to sign photos from your library.

Signature for PDF is available for free for a limited time. It has a 3.5-star rating with a total of 6 ratings.

Universal:

Clap Box ($1.99 → Free, 31.1 MB): Add a little or a lot of synthesized clapping to your tunes or everyday life with this entertaining music app. After tweaking a variety of settings, you’re able to trigger clapping by tapping a button, have the app clap automatically, or clap or stomp your own hands and feet to trigger it. The app also includes a humanize function to create random variations, and full MIDI support.

Clap Box is available for free for a limited time. It has a 4.5-star rating with a total of 24 ratings.

Centipede®: Origins ($0.99 → Free, 47.9 MB): Stop the vile creepy crawlies from destroying your entire garden in this updated version of Atari’s classic arcade game, Centipede. Tap and drag your finger across the screen to control your arrow-firing gnome. Take out every last bug before they reach the bottom of the screen to move on to the next wave. Purchase new weapons and upgrade your arsenal with the coins earned during battle to strengthen your forces. The game includes four environments, loads of unlockable content, and achievements and leaderboards via Game Center.

Centipede®: Origins is available for free for a limited time. It has a 4-star rating with a total of 57 ratings.

KAYAK PRO ($0.99 → Free, 16.9 MB): Plan your next trip with this powerful travel app. It allows you to compare flight, hotel, and car rental deals in a flash. You can also book hotels right from the app, and manage your entire itinerary. The app includes a bunch of other handy tools as well, like a flight status tracker, currency converter, baggage fee calculator, and more than 100 airport terminal maps.

KAYAK PRO is available for free for a limited time. It has a 4-star rating with a total of 2076 ratings.

Chasing Yello ($0.99 → Free, 29.0 MB): Help Yello the fish escape from an overzealous young girl named Mathilda in this endless distance game. Tilt your iDevice to steer Yello around the many obstacles in the river. You’ll also need to swipe up to jump over logs and rocks, and swipe down to dive under them. Collect stars above and below the water to unlock power-ups. The game also includes achievements and leaderboards via Game Center.

Chasing Yello is available for free for a limited time. It has a 4.5-star rating with a total of 82 ratings.

SellMe – How much is your device worth – iPad and iPhone version ($2.99 → Free, 3.4 MB): Find out how much your iPhone, iPod touch, or iPad is worth in a few quick steps with this utility app. SellMe will analyze your iDevice and fill in a handful of details for you. Then you just have to provide a few additional details before it’s able to calculate a value. If you’re ready to sell, you can allow SellMe to help you create an eBay listing from all of the details you provided.

SellMe – How much is your device worth – iPad and iPhone version is available for free for a limited time. It has a 3.5-star rating with a total of 6 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.