# Learn Ruby Programming Free vs OrbitCalc

The clearest difference is in-app purchases: Learn Ruby Programming Free at none against OrbitCalc's 1. Learn Ruby Programming Free also leads on device support (3 vs 1) and iOS requirement (7.0 vs 18.0). On price and ads there is nothing between them.

Both are free to download. OrbitCalc sells 1 one-off in-app purchase. Learn Ruby Programming Free asks for nothing beyond the download.

## The numbers

| Metric | Learn Ruby Programming Free | OrbitCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/orbitcalc/id6743425109/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | — | Free |
| Size | 21 MB | 11 MB |
| Requires iOS | **7.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Putranto](https://appshunter.io/developer/1097285857) | [Bian Dhoan Kwik](https://appshunter.io/developer/1793925532) |

## What reviewers say

### Learn Ruby Programming Free

[App page](https://appshunter.io/ios/app/learn-ruby-programming-free/id1183206263)

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Learn Ruby Programming Free free?

Learn Ruby Programming Free is free to download, with no in-app purchases.

### Is OrbitCalc free?

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

### Do Learn Ruby Programming Free or OrbitCalc have ads?

Neither Learn Ruby Programming Free nor OrbitCalc 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.*