Read and annotate PDF documents while on the go with today’s AppBump featured app, PDF Expert. This is the first time ever that PDF Expert for iPhone has been offered for free, so make sure to take advantage of this opportunity while you can.

We also have a highly-acclaimed space combat and trading simulation game, and an adorable casual game where you get to control the flow of rain from an oh-so-negative cloud.

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:

PDF Expert (professional PDF documents reader) ($10.99 → Free, 25.6 MB): Read and annotate PDF documents while on the go with this fantastic business app from Readdle. It allows you to import and export documents from a wide range of services, including Dropbox, GoogleDocs, and Box.net, or via iTunes File Sharing. You can then highlight text within your PDF, add notes, add text, strike-through text, and even fill in forms, check boxes, and radio buttons. The app also includes bookmarking, full text search, password protection, and AirPrint support.

PDF Expert (professional PDF documents reader) is available for free for a limited time. It has a 4-star rating with a total of 592 ratings.

Pure Meditation Premium* | AmbiScience™ • Binaural & Isochronic Ambient Meditation Utility ($1.99 → Free, 160.3 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 30 ambient tracks, three noise tracks, two sound tracks, 14 entrainment programs, the ability to create your own custom programs, a timer with fade, repeating alarms with snooze, and a full tutorial.

Pure Meditation Premium* | AmbiScience™ • Binaural & Isochronic Ambient Meditation Utility is available for free for a limited time. It has a 4-star rating with a total of 83 ratings.

Gopher Madness ($0.99 → Free, 13.0 MB): Stop the army of gophers from gobbling up all of the vegetables in the garden in this fast-paced arcade game. Gophers come speeding towards the surface from every which way. You’re able to swipe across groups of them to stop them in their tracks, and then tap them as quickly as possible to score combo points. The game includes 15 regular levels, three survival mode levels, and achievements and leaderboards via Game Center.

Gopher Madness is available for free for a limited time. It has a 4.5-star rating with a total of 28 ratings.

TumbleOn – Tumblr App for Images ($0.99 → Free, 8.7 MB): Explore and share your favorite photos on Tumblr with this social networking app. You’re able to simply swipe through photos from your favorite Tumblr photo blogs. A toolbar at the bottom of the screen allows you to quickly view captions, and reblog, favorite, and download photos. The app also includes the ability to search for photos with tags, bookmark blogs, view photos in a slideshow, add comments, and upload and tag your own photos.

TumbleOn – Tumblr App for Images is available for free today only (11/22). It has a 4.5-star rating with a total of 116 ratings.

iCrates | Vinyl ($2.99 → Free, 2.9 MB): This ultimate music app allows you to search for vinyl records, CDs and tapes, or just the latest releases from your favorite artists. It provides you with access to the biggest music database and marketplaces on the web, allowing you to learn all about your favorite artists, complete your collections, and even find out how much your rare collections are worth. It also includes the ability to share your discoveries via your favorite social networks, access to YouTube videos, the ability to scan barcodes, and the ability to get insights into the record digging scene with access to the iCrates Magazine.

iCrates | Vinyl is available for free for a limited time. It has a 3.5-star rating with a total of 25 ratings.

Shopmate ($1.99 → Free, 5.2 MB): Streamline your shopping experience with this utility app. When creating a shopping list you’re able to define a store, date, budget, and add notes. Shopmate then allows you to add items from the built-in catalog of more than 220 or by creating your own. The app also includes a predictive list option, product filtering, product history and statistics, and the ability to share your lists via email or SMS.

Shopmate is available for free for a limited time. It has a 3.5-star rating with a total of 66 ratings.

Mystery Lighthouse ($0.99 → Free, 24.9 MB): Solve the mystery of Blackrock Lighthouse in this point and click adventure game. Make your way through each scene looking for clues and utilizing the items you have collected throughout the game to find your Uncle Augustus. The game includes hand-illustrated scenes, an original storyline, and loads of items to collect and puzzles to solve.

Mystery Lighthouse is available for free for a limited time. It has a 4-star rating with a total of 61 ratings.

Universal:

FiLMiC Pro ($3.99 → Free, 23.4 MB): This powerful photography app turns your iDevice into a full-featured HD video camera. The app provides you with absolute control over your project with its easily accessible buttons on the bottom and right sides of the screen. It also includes three shooting modes, four resolutions with four bitrate options each, 26 variable frame rates, six different ways to share your creations, and many more advanced features.

FiLMiC Pro is available for free for a limited time. It has a 3.5-star rating with a total of 395 ratings.

Smart Office 2 ($10.99 → Free, 16.6 MB): View, create, edit, and share Office documents with this productivity app. The app is loaded with features, including a variety of formatting and font options, preloaded templates, search, AirPrint support, the ability to export files as PDFs, and Dropbox and Google Docs integration. It also supports a wide variety of file formats.

Smart Office 2 is available for free for a limited time. It has a 4-star rating with a total of 2225 ratings.

Negative Nimbus ($0.89 → Free, 49.6 MB): Help a pouty rain cloud water Sunnyland’s many flowers while avoiding its other inhabitants in this adorable casual game. Nimbus floats ahead and rains down on the flowers all on his own, but it’s up to you to stop him from raining on everyone else’s parade by tapping and holding your finger on the screen. You’re able to increase your multiplier by hitting consecutive flowers. You’ll also be tasked with unearthing flowers by tapping on them. The game includes four worlds, unlockable comics and hats, power-ups, and dozens of animated characters.

Negative Nimbus is available for free for a limited time. It has a 5-star rating with a total of 54 ratings.

Army of Frogs HD ($2.99 → Free, 25.2 MB): This turn-based strategy game requires you to arrange frogs of different colors in order to be the first player to have at least seven of your own connected. During the game you take turns with your opponents placing frogs that are randomly chosen from the pool, which means that sometimes you’ll be placing your own frogs and sometimes you’ll be placing your opponent’s frogs. You can strategically place frogs so that even if it isn’t your own, you can block your opponent from leaping theirs into place. The game includes an in-depth tutorial, the ability to play with two to four players (human or AI), and achievements via Game Center.

Army of Frogs HD is available for free for a limited time. It has a 4-star rating with a total of 195 ratings.

Verticus ($0.99 → Free, 48.3 MB): Play as a free-falling superhero and save the planet from destruction in this endless distance game. You’re able to control Verticus via a single on-screen joystick. As you fall, you must avoid treacherous obstacles and alien attacks while collecting materials to upgrade your suit. The game includes loads of unlockable content, a variety of missions to complete, achievements and leaderboards via Game Center, and original characters, story, and voiceover by Stan Lee.

Verticus is available for free today only (11/22). It has a 4-star rating with a total of 112 ratings.

Gratitude & Happiness – A self-help journal for thoughts & mood tracking ($0.99 → Free, 4.9 MB): This lifestyle app helps you track your degree of happiness and practice expressing gratitude, staying in touch with friends, and acts of kindness. As you make your way through your day, the app will display your levels of happiness in graph form and whether or not you were able to practice the other items. It also includes weekly and monthly views, password protection, the ability to attach notes, and the ability to share your data.

Gratitude & Happiness – A self-help journal for thoughts & mood tracking is available for free for a limited time. It has a 3.5-star rating with a total of 62 ratings.

Galaxy on Fire 2™ ($4.99 → Free, 427.9 MB): Set out on an outer space adventure in this acclaimed space combat and trading simulation game. Travel through a vast galaxy with over 20 star systems and more than 100 individual planets to complete challenges. You’ll earn gold for your hard work, which can be used to obtain new ships and customize them with different weapon systems, power-ups, and commodities. The game includes hours upon hours of story-driven gameplay, the ability to snap and share screenshots, iCloud support, and achievements and leaderboards via Game Center.

Galaxy on Fire 2™ is available for free for a limited time. It has a 4.5-star rating with a total of 7821 ratings.

iPad:

Gopher Madness HD ($1.99 → Free, 15.8 MB): Stop the army of gophers from gobbling up all of the vegetables in the garden in this fast-paced arcade game. Gophers come speeding towards the surface from every which way. You’re able to swipe across groups of them to stop them in their tracks, and then tap them as quickly as possible to score combo points. The game includes 15 regular levels, three survival mode levels, and achievements and leaderboards via Game Center.

Gopher Madness HD is available for free for a limited time. It has a 4-star rating with a total of 13 ratings.

TumbleOn HD – Tumblr App for Images ($1.99 → Free, 7.4 MB): Explore and share your favorite photos on Tumblr with this social networking app. You’re able to simply swipe through photos from your favorite Tumblr photo blogs. A toolbar at the bottom of the screen allows you to quickly view captions, and reblog, favorite, and download photos. The app also includes the ability to search for photos with tags, bookmark blogs, view photos in a slideshow, add comments, and upload and tag your own photos.

TumbleOn HD – Tumblr App for Images is available for free today only (11/22). It has a 4-star rating with a total of 255 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.