# Three-Body Simulator — Celestial Motion Simulator

> Simulate celestial motion and gravitational interactions between multiple bodies. (iPhone/iPad app by 骐显 梁.)

- Source: https://appshunter.io/ios/app/three-body-simulator/id6446972716 (this page in markdown: same URL + `.md`)
- Developer: [骐显 梁](https://appshunter.io/developer/1314814852)
- Category: Education, Reference
- Price: $0.99
- Rating: 2.00/5 from 4 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 72 MB
- Languages: American English
- Released: 2023-04-12
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/three-body-simulator/id6446972716/reviews.md

## What is Three?

1. For a batter observation, all volumes are enlarged by many times (the range of gravity in the real universe is much larger, and the planet is much smaller, so don’t worry about breaking the Roche limit)
2. Users can add up to 7 Sun, and randomly distribute them to nearby spaces.
3. Users can add an asteroid matrix. Asteroids have no gravity (negligibly small in the reality) and are only affected by Suns. (Well, in fact, it is afraid that the cpu is limited, and it is impossible to calculate the mutual gravitational force of too many stars.)
4. The three-body system is very unstable, and it is prone to gravitational slingshot effect. If a star is too far away from other stars, it may never come back.
5. However, users can also turn on an additional r/10 parameter to increase the gravitational force of stars at a long distance and make it return to the system (after turning on the parameter, it can only be used for demonstration, and the data has no reference value).

## Key features

- Multi-body gravitational simulation
- Add up to 7 suns
- Asteroid matrix simulation
- Observe gravitational slingshots
- Adjustable gravity parameters for demonstration
- Enlarged volumes for better observation

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/three-body-simulator/id6446972716/reviews.md

### 5/5 — 请问怎么更改系统中的小行星数量

*2025-01-31*

怎么更改

### 1/5 — English NOT supported

*2024-09-05*

The description says support for English and Japanese has been added but this is not true  Everything is in Chinese and there is no way to change the language

### 1/5 — Frozen and useless

*2024-01-24*

The app displays a frozen screen with buttons that do nothing. Labels are all in Chinese with no way to change to English, despite what the description says. The app just does nothing at all.

### 5/5 — Good simulation, could have a few improvements

*2023-06-21*

Really cool simulator, I like the graphics and the planets. I wish there was a way to speed up/slow down or scroll through time. It would also be nice to have a little more control over zooming. Other than that it’s cool work.

## Frequently asked questions about Three

### What is the main purpose of Three-Body Simulator?

Three-Body Simulator allows users to explore and visualize celestial mechanics by simulating the gravitational interactions between multiple celestial bodies, such as suns and asteroids.

### Can I add multiple stars to the simulation in Three-Body Simulator?

Yes, users can add up to seven suns to the simulation and randomly distribute them in the nearby space to observe their gravitational influence.

### Does Three-Body Simulator have ads?

No, Three-Body Simulator does not contain advertisements. It is a paid application.

### What is the pricing for Three-Body Simulator?

Three-Body Simulator is available for a one-time purchase of $0.99.

### What devices is Three-Body Simulator compatible with?

Three-Body Simulator is compatible with iPhones, iPads, and iPods.

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

The app was last updated on April 24, 2023, with version 1.2. The initial release date was April 12, 2023.

### What is the age rating for Three-Body Simulator?

Three-Body Simulator has an age rating of 4+, making it suitable for younger users interested in educational simulations.

### Can the gravity parameters in Three-Body Simulator be adjusted?

Yes, users can turn on an additional r/10 parameter to increase the gravitational force of stars at a long distance, primarily for demonstration purposes.

## Version history (last 3 releases)

### 1.2 — 2023-04-24

1. Added traditional Chinese, English, Japanese support
2.Bugs fixed

### 1.1 — 2023-04-16

1、增加了水平面的网格，作为初始设置中的参考
2、增加了菜单和一些选项
3、增加了运行时可关闭部分效果的开关
4、新增了教学模式
5、修复了一些设置中UI数值错误
6、增加了小行星生成的样式（正方体，方形，轴线）以提供更多样性的效果
7、增加了星球的颜色和尾巴颜色

### 1.0 — 2023-04-12

No release notes.

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| --- | --- | --- | --- |
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## More apps by 骐显 梁

- [Spy Chess](https://appshunter.io/ios/app/spy-chess/id6446029675)

All apps by 骐显 梁: https://appshunter.io/developer/1314814852

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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 2026-08-20.*