Listen to the sounds of nature, count and keep track of anything, and visualize functions with today’s collection of apps and games.

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.

Visual Math 4D ($1.99 → Free, 47.4 MB): Visualize functions with VisualMath . Students and engineers.

VisualMath 4D is a professional graphical calculator. It allows you to browse through a collection of built-in functions like trigonometrical, rounding, and sum and product or you can compute your own. Functions can be drawn in 2-D, 3-D, and 4-D all with a time variable. You’re also able to save your functions, rotate and zoom in on the graph in three dimensions, and display multiple graphs at once.

4D is available for free for a limited time. It has a 4.5-star rating with a total of 250 ratings.

Simple Counter – Tally Counters and Scorekeeper Done Right ($1.99 → Free, 16.3 MB): Count and keep track of anything with . Pretty much everyone.

Simple Counter allows you to count anything with ease. It supports an unlimited number of counters with an adaptable interface that helps avoid clutter. Tap to count up, swipe to count down, and tap and hold to rename, reset, or delete a counter. Pinch to zoom in on a counter to enter full screen mode, turning the entire screen into a button. The app also includes sound effects, a bulk delete and reset option, and optional vibrations.

Simple Counter – Tally Counters and Scorekeeper Done Right is available for free for a limited time. It has a 5-star rating with a total of 11 ratings.

Flowing ~ Meditation in Nature ($1.99 → Free, 97.3 MB): Block out the world with the sound of streams, waterfalls, and rivers with . Those who have enjoyed any of Taptanium’s other relaxation apps like Away, Sunny, and Thunderspace.

Flowing combines natural streaming water recordings with stunning artwork to help you sleep, relax, study, or meditate. It utilizes stereoscopic 3-D audio that’s optimized for headphones, so you can drift off into your own little world. The six natural streaming water recordings can be mixed with rain, rain on a tent, music, and bird sounds.

Flowing ~ Meditation in Nature is available for free for a limited time. It has a 4.5-star rating with a total of 926 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.


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 [email protected] 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.

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