Visual Math 4D vs Starlight®

Visual Math 4D is a graphical calculator that allows you to visualize and solve your mathematical equations. It supports various types of equations, such as polar, spherical, parametric and implicit equations, which can be visualized and animated in 2D and 3D. You can also plot and animate vector fields in 2D and 3D. Features: - solve equations - plot cartesian functions with intersections - plot polar- and spherical functions - plot parametric equations in 2D and 3D - plot complex functions (draw real part & imaginary part) - plot vector fields in 2D and 3D - plot implicit equations in 2D and 3D - plot contour maps ins 2D and 3D - support for complex numbers - vectors & matrices - truth- and value tables - trigonometrical and hyperbolic functions - piecewise-defined functions - logarithmic functions - logical & binary operators - definite integral - n-th derivations - statistical functions (nPr, nCr, rand..) - physical and mathematical constants with their units - animate variables - share content with other apps - no network connection required - and a lot more The app is easy to use and helps students and engineers to visualize and solve their mathematical equations.

Point your iPhone or iPad like a magic lens into the night sky, and see in real time what stars, planets, and constellations hover above. Stargazing has never been so easy! This app is a streamlined starmap that is gorgeous to look at. See constellations come to life against a vibrant backdrop of stars, each colored according to their actual stellar classification. Track the movement of planets. See the phases of the moon. Discover detailed information about stars. Amaze your friends and educate your kids with this impressive app. FEATURES: * New Augmented reality mode! * Information at your fingertips. Learn about stars and planets. Discover trivia connecting stars to some of your favorite science fiction Learn the folklore behind constellations. * Lightning-fast navigation. * Over 100,000 stars from the Hipparcos database, painted accurately according to their spectral type. * All 88 western constellations. * Planets of the solar system. * See a real-time map of the sky, day or night. * Detailed information on hundreds of celestial objects from stars to planets to solar system objects. * Powerful zoom feature allows you to pinpoint star clusters and examine planets. * View the sky beneath the horizon. Know where the sun is, even at night! * Supports both motion and touch navigation. Point your device at the sky and the app will track what you see. _______________________________________ Starlight is an ever-expanding tour of the Cosmos with new content planned regularly.