# Relativistic Space vs Formula Conversion

The clearest difference is in-app purchases: Relativistic Space at none against Formula Conversion's 1. Formula Conversion's advantage is update cadence (every 26 months vs every 75 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Formula Conversion sells 1 one-off in-app purchase. Relativistic Space asks for nothing beyond the download.

Relativistic Space ships an update every 75 months, Formula Conversion every 26 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Relativistic Space | Formula Conversion |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/relativistic-space-time/id1463093650/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 75 months | **Every 26 months** |
| Monetization | Free | — |
| Size | 52 MB | 2 MB |
| Requires iOS | **13.0** | 14.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thieberson Gomes](https://appshunter.io/developer/1434771806) | [Janek Soomets](https://appshunter.io/developer/1315295062) |

## What reviewers say

### Relativistic Space

[App page](https://appshunter.io/ios/app/relativistic-space-time/id1463093650)

This educational tool simulates the behavior of space and time at high speeds. Developed as part of a master's dissertation, it focuses on relativistic effects without considering acceleration.

**Highlights:** Relativistic velocity simulation, Space-time behavior visualization, Pedagogical tool, Master's dissertation project

**Features:** macOS Compatibility

**In-app purchases:** none


### Formula Conversion

[App page](https://appshunter.io/ios/app/formula-conversion/id1586539965)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade Formula Conversion | $3.99 | one-time |


## Frequently asked questions

### Is Relativistic Space free?

Relativistic Space is free to download, with no in-app purchases.

### Is Formula Conversion free?

Formula Conversion is free to download, with in-app purchases available.

### Do Relativistic Space or Formula Conversion have ads?

Neither Relativistic Space nor Formula Conversion shows ads.

### Which is updated more often, Relativistic Space or Formula Conversion?

Relativistic Space ships an update every 75 months, and Formula Conversion every 26 months. Most recently, Relativistic Space was updated on October 7, 2026 and Formula Conversion on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*