# Vibra Calc vs OrbitCalc

The clearest difference is rating: OrbitCalc at 5.0 against Vibra Calc's 4.0. Vibra Calc's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On price, ratings volume, ads and monetization model there is nothing between them.

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

OrbitCalc holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

## The numbers

| Metric | Vibra Calc | OrbitCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/vibra-calc/id458723288/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/orbitcalc/id6743425109/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 39 months | — |
| Monetization | Free | Free |
| Size | 22 MB | 11 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Bian Dhoan Kwik](https://appshunter.io/developer/1793925532) |

## What reviewers say

### Vibra Calc

[App page](https://appshunter.io/ios/app/vibra-calc/id458723288)

This app calculates vibration frequencies for various rotating machinery components and includes an interactive vibration severity test tool. It also offers a calculator for converting vibration units and a glossary of terms.

**Highlights:** Induction motor frequency calculation, Detailed gear frequencies, Rolling element bearing frequencies, Pump and fan vane pass frequencies, Journal bearing frequencies, Interactive vibration severity test, Vibration unit conversion

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

**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 Vibra Calc free?

Vibra Calc is free to download, with no in-app purchases.

### Is OrbitCalc free?

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

### Which has better reviews, Vibra Calc or OrbitCalc?

OrbitCalc is rated higher. Vibra Calc averages 4.0 out of 5 from 2 ratings, while OrbitCalc averages 5.0 from 1 ratings.

### Do Vibra Calc or OrbitCalc have ads?

Neither Vibra Calc nor OrbitCalc shows ads.

---

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