Earth's Core vs Vector3D

The Earth's Core App lets you see our planet’s internal structure. Just point your mobile to the center of the Earth and experience a deep look inside our planet. Right beneath your feet, thousands of kilometers deep, lies a giant ball of molten Iron as hot as the surface of the sun! Explore the Layers of the Earth and their names, discover the temperature and depth of each layer. Feedback and ideas: please send to support@cosmic-watch.com

Vector3D: Math Plotter brings your math to life — plot vectors, points, and line segments in interactive 3D space, right on your iPad or iPhone. Whether you're a student tackling linear algebra, a teacher preparing classroom demonstrations, or a physics enthusiast exploring 3D geometry, Vector3D gives you an intuitive tool to visualise mathematical objects the way they really look. FEATURES • Plot vectors with custom start points, components, colours, and thickness • Visualise points and line segments in full 3D • Display vectors in i, j, k notation with automatic magnitude calculation • Labels follow each object in 3D space for easy identification • Adjust axis and grid size to fit any scale • Save scenes as .vviz files and reload them anytime • Share scenes via AirDrop, Files, or any app • Capture and share screenshots of your 3D scene • Dark mode and light mode support • Available in English, Traditional Chinese, and Japanese • Works completely offline — no account required, no data collected FREE vs PRO Free: Plot up to 10 objects per day, save up to 3 scenes Pro (one-time purchase): Unlimited objects and unlimited scene saves PRIVACY Vector3D collects zero data. No analytics, no ads, no tracking. Everything stays on your device. Perfect for: • High school and university students studying vectors, linear algebra, or calculus • Math and physics teachers creating visual aids • STEM learners curious about 3D geometry