Apps That Went Free on 2019-05-18

iPhone

iPad

Visual Math 4D

Ronny Weidemann

Visualize functions with VisualMath 4D.

Students and engineers.

FREE ($1.99) For a limited time FREE ($1.99) For a limited time

Why we picked this?

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.

You’re in need of a professional graphing cal calculator. It’s loaded with features and functions.

You have no use for scientific functions.

iPhone

iPad

btw – puzzle maze

Oleksandr Kozlov

Pick up all of the circles in btw.

Fans of logic puzzles.

$1.99 $1.99

Why we picked this?

btw requires you to find the one true path to the exit. Black and white circles are strategically placed amongst the square fields. It’s up to you to switch the light and guide the line through each circle before reaching the exit. If you back yourself into a corner, you can reset and try again. btw includes 88 handcrafted levels.

You enjoy labyrinth games.

You prefer competing for high scores.

iPhone

NoLocation - Remove exif data from photos

Jackson Cole

Remove location data from your photos with NoLocation.

Choose any photo and Instantly share to your favourite social network

Those who prefer to keep their data private.

$1.99 $1.99

Why we picked this?

NoLocation allows you to quickly and easily remove EXIF data from your photos. The data can be removed from new photos taken within NoLocation, or you can import any photo from your library. Keep in mind that NoLocation doesn’t overwrite the original photo. It simply makes a copy of the photo without any of the EXIF data included.

You don’t want to share your location. NoLocation is remarkably easy to use.

You want to keep your photo data intact. EXIF data consists of things like date, time, camera settings, and copyright information as well as location data.