# Three-Body Simulation — Explore gravity in motion

> Educational simulation exploring gravity and celestial orbital mechanics. (iPhone/iPad app by 志强 曾.)

- Source: https://appshunter.io/ios/app/three-body-simulation/id6817179834 (this page in markdown: same URL + `.md`)
- Developer: [志强 曾](https://appshunter.io/developer/1800987336)
- Category: Education, Reference
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 16.0 · 6 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-10-01
- Data updated: 2026-10-19
- Monetization: free with in-app purchases

## What is Three?

Three bodies. Countless paths. Watch the beauty of gravity unfold.

Three-Body Simulation brings abstract celestial motion into a world of orbits you can watch, interact with, and explore. See three bodies pull on one another as their trails gradually draw patterns, and discover how a simple law of gravity produces rich and fascinating motion.

Explore 16 classic periodic solutions
From the flowing Figure Eight to Butterfly, Moth, and Bumblebee, discover the shapes and rhythms of different periodic solutions. Detailed introductions to each orbit explain the motion behind these patterns.

Discover 10,059 three-dimensional periodic orbits
Explore published spatial periodic solutions and discover paths that weave and curve through space. Choose an orbit by number or discover one at random, then rotate the view to see its shape from different directions.

Try your own gravity experiment
Adjust the mass, initial position, and velocity of each body and watch how the orbit changes. You can also explore random three-body motion to see how the bodies approach, circle, and move away from one another.

Turn curiosity into understanding
Learn about the origins, history, and basic principles of the three-body problem. See the full system of three equations of motion, explore classic periodic solutions, and learn how the 10,059 spatial periodic orbits were discovered. Let the paths you see become a starting point for understanding gravity and motion.

Available on iPhone and iPad in ten languages, including Chinese, English, and Japanese. Orbit data, simulations, and introductions are included in the app, so the core exploration experience works offline.

The complete orbit catalog, random motion, and custom experiments are unlocked with a one-time in-app purchase.

## Key features

- Explore 16 classic periodic solutions
- Discover 10,059 3D periodic orbits
- Experiment with custom gravity scenarios
- Learn about the three-body problem
- Offline exploration of orbits
- Interactive celestial motion simulation

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Lifetime Unlock | $0.99 | one-time |


## Is Three safe?

Not enough ratings yet to assess Three.

## Is Three legit?

Three-Body Simulation has limited verification signals. The AppsHunter Legitimacy Score for Three is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Frequently asked questions about Three

### What is the Three-Body Simulation app?

Three-Body Simulation is an educational app that allows you to explore the complex beauty of gravity and celestial motion. You can observe and interact with three bodies, discover various orbital paths, and even conduct your own gravity experiments.

### What learning methodology does Three-Body Simulation use?

The app uses interactive simulation and visual exploration to teach about the three-body problem. It provides detailed introductions to classic periodic solutions and explains the principles behind discovered spatial orbits, turning observation into understanding.

### How does Three-Body Simulation track progress?

Progress tracking is not a primary feature of Three-Body Simulation. The app focuses on exploration and learning through interaction with the simulation, allowing users to discover and experiment at their own pace.

### Does Three-Body Simulation offer certifications?

No, Three-Body Simulation does not offer certifications. It is designed as an educational tool for exploration and understanding of physics concepts, not for formal academic accreditation.

### What is the price of Three-Body Simulation?

The core exploration experience of Three-Body Simulation is free. However, the complete orbit catalog, random motion, and custom experiments are unlocked with a one-time in-app purchase.

### Does Three-Body Simulation have ads?

No, Three-Body Simulation does not contain advertisements. The app is ad-free, ensuring an uninterrupted educational experience for users.

### What devices is Three-Body Simulation available on?

Three-Body Simulation is available on iPhone and iPad devices. It supports ten languages, including Chinese, English, and Japanese.

### How often is Three-Body Simulation updated?

Three-Body Simulation was last updated on October 9, 2026, to version 1.2. The app is available on iPhone and iPad and was released on October 1, 2026.

## Version history (last 3 releases)

### 1.2 — 2026-10-09

New full-screen immersive mode: tap the simulation to fill the screen while keeping the orbit name at the upper left and live period, progress and position data at the upper right. Menus, orbit descriptions and gesture hints are hidden. Tap again to restore the interface.
Smoother transitions eliminate the visual jump when entering and leaving immersive mode.
Updated app icon. A transparent logo and app name now identify the simulation in normal and full-screen screenshots. The three-body guide now opens from a question-mark icon.

### 1.1 — 2026-10-06

• Updated app icon and name: Three-Body Simulation.
• Five classic orbits are now free, including Moth I and Butterfly II.
• Clear category cards and a separate orbit list make choosing trajectories easier.
• Rewritten three-body introduction with equations of motion, initial conditions, and periodic solutions.
• Improved readability and a direct introduction entry on the home screen.
• Expanded the introduction in all ten languages with the history of the three-body problem, the complete three-equation system, detailed explanations of all 16 classic orbits, and how the 10,059 spatial periodic orbits were found.

### 1.0 — 2026-10-01

No release notes.

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## More apps by 志强 曾

- [Playtrait: AI Portrait](https://appshunter.io/ios/app/playtrait-ai-portrait/id6760446054)

All apps by 志强 曾: https://appshunter.io/developer/1800987336

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*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 2026-10-19.*