# PocketCosmos

> 3D Orbital Simulation Engine

Canonical page: [https://chrome-stats.com/d/id6771312998](https://chrome-stats.com/d/id6771312998)

## Overview

- **ID:** `id6771312998`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** 应龙 张
- **Category:** Education
- **Version:** 1.0.0
- **Last updated:** 2026-05-21
- **First published:** 2026-05-21
- **Size:** 709 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/pocketcosmos/id6771312998)
- **Privacy policy:** [https://adler0518.github.io/apps\_privacys/PocketUniverse-privacy.html](https://adler0518.github.io/apps_privacys/PocketUniverse-privacy.html)

## Description

3D orbital simulation engine based on real astronomical parameters. 8 scenarios covering core celestial mechanics.

PocketCosmos employs a real-time gravitational computation engine, accurately simulating celestial motion in a SceneKit 3D environment.

Technical Specifications:
- Gravity formula: F = G x M x m / r2, real-time N-body simulation
- Rendering: SceneKit + Metal, smooth 60fps performance
- Scenarios: 8 curated astronomical simulations
- Data source: Parameterized from NASA/JPL public datasets

8 Simulation Scenarios:
1. Solar System Panorama - all planets in proportional orbits
2. Inner Planets - close observation of Mercury through Mars
3. Outer Planets - Jupiter to Pluto orbital dynamics
4. Asteroid Belt - dozens of asteroid distribution simulation
5. Jupiter System - Galilean moon orbital mechanics
6. Pluto System - elliptical orbit and Charon tidal locking
7. Gravity Slingshot - probe acceleration effect demonstration
8. Solar System Top View - global perspective planetary alignment

Education Module (6 topics):
- Law of Universal Gravitation
- Kepler's Three Laws - elliptical orbits, area law, period law
- Tidal Locking - synchronous rotation mechanism
- Roche Limit - critical disintegration distance
- Supernova - stellar evolution final stage
- Lagrange Points - three-body gravitational equilibrium

Requirements: iOS 17.0+ | iPhone only
Privacy: Zero data collection, fully local execution

## Rankings

- #1,310,255 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6771312998)