# OrbitCalc vs Red Hat RHCSA Prep

The clearest difference is price: OrbitCalc at Free against Red Hat RHCSA Prep's $4.99. Red Hat RHCSA Prep's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads there is nothing between them.

OrbitCalc is free to download; Red Hat RHCSA Prep costs $4.99 up front. OrbitCalc sells 1 one-off in-app purchase. Red Hat RHCSA Prep asks for nothing beyond the download.

## The numbers

| Metric | OrbitCalc | Red Hat RHCSA Prep |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/orbitcalc/id6743425109/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | Free | — |
| Size | 11 MB | 33 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bian Dhoan Kwik](https://appshunter.io/developer/1793925532) | [satoshi yoshida](https://appshunter.io/developer/1873856165) |

## What reviewers say

### OrbitCalc

[App page](https://appshunter.io/ios/app/orbitcalc/id6743425109)

This tool helps space enthusiasts, engineers, and researchers precisely calculate satellite orbits. It allows users to determine orbital parameters from vector data or vice versa with accurate results. Save and manage your calculations, and customize measurement units for a personalized experience.

**Highlights:** Orbital calculations from parameters or vectors, Save and revisit previous calculations, History page for managing saved work, Customizable measurement units

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OrbitCalc Pro | $0.99 | one-time |


### Red Hat RHCSA Prep

[App page](https://appshunter.io/ios/app/red-hat-rhcsa-prep/id6784155803)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OrbitCalc free?

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

### Is Red Hat RHCSA Prep free?

Red Hat RHCSA Prep costs $4.99, with no in-app purchases.

### Do OrbitCalc or Red Hat RHCSA Prep have ads?

Neither OrbitCalc nor Red Hat RHCSA Prep shows ads.

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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.*