# Morongo USD vs OrbitCalc

The clearest difference is in-app purchases: Morongo USD at none against OrbitCalc's 1. Morongo USD also leads on iOS requirement (16.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. OrbitCalc sells 1 one-off in-app purchase. Morongo USD asks for nothing beyond the download.

## The numbers

| Metric | Morongo USD | 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 |
| Update frequency | Every 2 months | — |
| Monetization | — | Free |
| Size | 144 MB | 11 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Morongo Unified School District](https://appshunter.io/developer/1690622763) | [Bian Dhoan Kwik](https://appshunter.io/developer/1793925532) |

## What reviewers say

### Morongo USD

[App page](https://appshunter.io/ios/app/morongo-usd/id6449787290)

**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 Morongo USD free?

Morongo USD is free to download, with no in-app purchases.

### Is OrbitCalc free?

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

### Do Morongo USD or OrbitCalc have ads?

Neither Morongo USD 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.*