Preposition Builder Master , Visual Math 4D , Pyrotexni Fireworks and more

Universal:

Preposition Builder Master ( $1.99 → Free ) MasterKey Games Preposition Master allows you to improve your language skills in an entertaining way. In each level you’re presented with an incomplete sentence and a collection of prepositions. Tap on the preposition that best fits into the sentence before time expires to complete it. Each mistake will cost you precious seconds, so move quickly but efficiently. The game also includes an online multiplayer mode, and achievements and leaderboards.

Visual Math 4D ( $1.99 → Free ) Ronny Weidemann 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 2D, 3D, and 4D 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.

Pyrotexni Fireworks ( $0.99 → Free ) Doko Software Pyrotexni allows you to put on a mesmerizing fireworks display. Just tap or drag one or multiple fingers across the screen to release thousands of colored particles. Pyrotexni also includes explosive sounds, customizable particle sizes, and auto-play.

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from : Mid Atlantic Consulting, Inc.