StarSim-X

Education

$2.99 · Designed for iPad. Not verified for macOS.

Real gravity, real collisions, real orbits. A scientific simulation: drag, pinch, watch, sometimes a planet even ignites into a star. No ads, no data collected. StarSim is a Newtonian n-body gravity simulator powered by a real physics engine. Use the edges of the screen to change time and gravity, pinch to zoom, tap any body to see its live mass, position, speed, momentum and kinetic energy. Let bodies collide: slower contacts tend to merge, faster ones shatter into pieces; momentum and energy are conserved exactly. A planet that gains enough mass can cross the threshold and ignite into a star with its own glow. Watch each body's trail in its own color, and follow every collision and merge step by step in the console panel (with m, v, p, E and collision heat). Built-in systems include a binary star with two planets, our own Solar System (with the Moon), and a three-body collision test. Or type your own initial masses, positions and velocities into the table and watch gravity decide what happens, or tap Random for a different scenario every time. Build your own small universe. A full astrophysics reference is included: the real formulas behind the simulation, a table of actual celestial bodies, and a short history of orbital mechanics from Ptolemy to Einstein; all of it in six languages. This app collects none of your data, saves none of it, sends none of it. No account, no ads, no in-app purchases.

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The developer, Gurkan Ger, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Gurkan Ger
    Size
    5.7 MB
    Category
    Education
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English
    Age Rating
    4+
    Copyright
    © 2026 Neuron Burst - GER IT Consultancy
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.

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