# NewtonianMechanics — AstrodynamicsSimulation

> 3D Newtonian mechanics simulator for celestial body motion and gravitational interactions. (iPhone/iPad app by Takao Akatsu.)

- Source: https://appshunter.io/ios/app/newtonianmechanics/id1530946329 (this page in markdown: same URL + `.md`)
- Developer: [Takao Akatsu](https://appshunter.io/developer/1530946331)
- Category: Education, Entertainment
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.4 · 2 MB
- Languages: Korean, Dutch, Danish, German (Germany), Norwegian Bokmål, Swedish, European Spanish, American English, Ukrainian, Italian and 6 more
- Released: 2020-09-21
- Data updated: 2026-08-19
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/newtonianmechanics/id1530946329/reviews.md

## What is NewtonianMechanics?

This is a 3D simulator of Newtonian mechanics.
According to the equations of motion and the universal law of gravitation, you set the attributes of a celestial body such as mass, radius, position, and velocity, and the subsequent motion of the body is simulated.
Samples are provided for immediate simulation.
The samples include Sun and Earth,Black Holes and Small Bodies, GPS, and Geostationary Satellites.
Samples can also be modified and saved.
This means that users can create new celestial mechanics shows.
In the home window, select your favorite sample and press Universe.

## Key features

- 3D Newtonian mechanics simulation
- Simulate celestial body motion
- Universal law of gravitation
- Customizable celestial body attributes
- Pre-made simulation samples
- Create and save custom scenarios

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/newtonianmechanics/id1530946329/reviews.md

### 5/5 — 理系のおもちゃ

*2020-11-21, version 1.0*

星の運動のアニメかと思いきや、開発者はアニメーター的な作業は何一つしていないようだ。
このアプリがしていることは、ただ一つ。
万有引力の法則とニュートン力学を忠実に実行しているだけ。
利用者はと言えば、ある時刻のデータを入力するだけ。
後は、星が勝手に物理法則に従って動いてくれる。
それがどうしたって感じだけど、物理オタクのマスコットになるかも？

### 5/5 — 癒やし

*2020-11-18, version 1.0*

天体運動のアニメーション、眺めてて、飽きない。地球と月のサンプルも良いし、かに座の中性子星の連星も面白い。この連星に関して、ちなみに、作者は、
世間に知られている連星の質量でシミュレーションしたところ、公転軌道を形成しなかったとのこと。
公転するためには、10倍の質量が必要だと主張されている、本当かな？
ウィキペディアに載っている質量でやってみようと思う。

## Frequently asked questions about NewtonianMechanics

### What is NewtonianMechanics?

NewtonianMechanics is a 3D simulator that demonstrates the principles of Newtonian mechanics and the universal law of gravitation. It allows users to simulate the motion of celestial bodies based on their physical attributes.

### How does NewtonianMechanics simulate motion?

The simulator uses the equations of motion and the universal law of gravitation to calculate and display the subsequent movement of celestial bodies. Users can define properties like mass, radius, position, and velocity.

### Can I create my own simulations in NewtonianMechanics?

Yes, you can modify existing samples or create entirely new celestial mechanics scenarios from scratch. This allows for a personalized learning experience and exploration of unique cosmic interactions.

### What kind of samples are included with NewtonianMechanics?

The app comes with several pre-made samples to get you started immediately. These include simulations of the Sun and Earth, Black Holes and Small Bodies, GPS satellites, and Geostationary Satellites.

### Is NewtonianMechanics available on multiple devices?

NewtonianMechanics is compatible with iPhones, iPads, and iPods, offering a consistent experience across Apple's mobile ecosystem.

### How often is NewtonianMechanics updated?

The app was last updated on August 29, 2023, with version 4.1. This indicates ongoing development and potential for future improvements and bug fixes.

### What is the age rating for NewtonianMechanics?

NewtonianMechanics has an age rating of 4+, making it suitable for a wide range of users interested in learning about physics and space.

### Does NewtonianMechanics have ads?

No, NewtonianMechanics is ad-free, providing an uninterrupted simulation experience for all users.

## Version history (last 5 releases)

### 4.1 — 2023-08-29

Supports Indonesian, Italian, Dutch, Finnish, Korean, Chinese, Danish, Norwegian, Swedish, Ukrainian, and Portuguese.

### 4.0 — 2022-07-19

Modifying the sample to make it more suitable for studying Newtonian mechanics.
German, French, and Spanish are supported.

### 3.0 — 2022-03-30

Added commentary.
The celestial data setting screen has been changed to the initial screen.

### 2.1 — 2022-01-17

Screen flickering problem solved (fixed a bug in object memory management)

### 2.0 — 2021-11-30

append alert message panel(user sample delete)
Support Japanese

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## More apps by Takao Akatsu

- [StarPromenade](https://appshunter.io/ios/app/starpromenade/id1548250534)
- [StarPromenadeLight](https://appshunter.io/ios/app/starpromenadelight/id1564202748)
- [NewtonianMechanicsLight](https://appshunter.io/ios/app/newtonianmechanicslight/id1564963799)
- [LineAlgebrArt](https://appshunter.io/ios/app/linealgebrart/id1570444249)
- [ElectronOrbital](https://appshunter.io/ios/app/electronorbital/id1602247689)

All apps by Takao Akatsu: https://appshunter.io/developer/1530946331

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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 2026-08-19.*