# Graviton Sim — Gravity Physics Simulator

> Gravity Physics Simulator (iPhone/iPad app by Scott Carnett.)

- Source: https://appshunter.io/ios/app/graviton-sim/id6754208416 (this page in markdown: same URL + `.md`)
- Developer: [Scott Carnett](https://appshunter.io/developer/1550322381)
- Category: Education, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 63 MB
- Languages: American English
- Released: 2025-10-23
- Data updated: 2025-12-14
- User reviews in markdown: https://appshunter.io/ios/app/graviton-sim/id6754208416/reviews.md

## What is Graviton Sim?

A physics simulation exploring gravitational dynamics and orbital mechanics.


## Version history (last 5 releases)

### 1.7.0 — 2025-12-13

- Relativistic Physics: Objects near light speed show time dilation, blue-shift glow, and velocity-dependent effects
- Tidal Forces: Visualize gravitational stress and Roche limit warnings for bodies at risk of breakup
- 3D Lighting: Realistic shadows, specular highlights, and day/night hemisphere illumination
- Atmospheric Effects: Stellar coronas, planetary halos, and sunrise/sunset scattering
- Custom Bodies: Tap-to-place mode with drag repositioning and color controls

### 1.6.0 — 2025-12-03

- Stunning collision effects with physics-based debris and shockwaves
- Sign in to sync your scenarios and settings across devices
- Cloud backup keeps your data safe
- Custom avatars and profile photos
- Three-finger pan gesture for intuitive camera control
- Adjustable auto-rotation speed slider
- Enhanced security protection
- Performance improvements and bug fixes

### 1.5.1 — 2025-11-23

- Export and import simulations as JSON files with complete physics state preservation
- Share high-quality 2x resolution screenshots across all platforms
- File picker integration for loading shared scenarios from the community
- Enhanced project architecture with modular platform-specific code organization

### 1.4.0 — 2025-11-16

- Test scenarios before saving: Preview custom scenarios with live simulation
- Experimental physics scenarios: Binary Pulsar, Trojan Asteroids, Rogue Planet
- Scenario creation system: Orbital calculator and body property editor
- Screen reader enhancements: Live region controls for better navigation
- Editor accessibility improvements: Full keyboard and screen reader support
- Semantic navigation updates: Enhanced keyboard controls and labels

### 1.3.1 — 2025-11-08

- Camera Speed Control: Adjustable AI camera movement with accessibility support
- Enhanced Bottom Sheet: Improved sizing, animations, and drag behavior
- Smoother Menus: Polished animations and faster interactions
- Better Physics Defaults: Optimized time scale for educational use
- Performance Improvements: Code optimizations and expanded test coverage

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2025-12-14.*