# RelativityTheory — Time in Relativity

> Time in Relativity (iPhone/iPad app by Takao Akatsu.)

- Source: https://appshunter.io/ios/app/relativitytheory/id1620999874 (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 14.4 · 6 MB
- Languages: Korean, Dutch, Danish, German (Germany), Norwegian Bokmål, Swedish, European Spanish, American English, Ukrainian, Italian and 7 more
- Released: 2022-05-03
- Data updated: 2026-08-19
- User reviews in markdown: https://appshunter.io/ios/app/relativitytheory/id1620999874/reviews.md

## What is RelativityTheory?

Introducing and explaining the mysterious phenomenon derived from the theory of relativity.
In particular, we will detail the changes in the way time progresses.
The interstellar flight screen shows how time progresses in response to rocket speed.
Shows the difference in how time progresses between rockets and the earth in space travel.
The GPS screen shows that gravity changes the way time progresses.


## Version history (last 5 releases)

### 2.4 — 2023-10-04

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

### 2.3 — 2022-07-14

Added rotation processing for stars, planets, and satellites.

### 2.2 — 2022-06-13

Correction of gps earth orbit period.

### 2.1 — 2022-06-01

Supports German, French and Spanish

### 2.0 — 2022-05-14

GPS screen added.
Correction of commentary.
Fixed a problem with the clock.

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## More apps by Takao Akatsu

- [NewtonianMechanics](https://appshunter.io/ios/app/newtonianmechanics/id1530946329)
- [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.*