# Vibra Calc

> Calculates vibration frequencies for machinery components and performs vibration severity tests. (iPhone/iPad app by Motionics LLC.)

- Source: https://appshunter.io/ios/app/vibra-calc/id458723288 (this page in markdown: same URL + `.md`)
- Developer: [Motionics LLC](https://appshunter.io/developer/424498959)
- Category: Education, Utilities
- Price: Free
- Rating: 4.00/5 from 2 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 22 MB
- Languages: American English
- Released: 2011-08-26
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/vibra-calc/id458723288/reviews.md

## What is Vibra Calc?

Vibra Calc calculates vibration frequencies of rotating machinery components given the specifications of each component. It includes induction motors, gears, rolling element bearings, pumps, fans & blowers, journal bearings, and belts & pulleys. Also, it provides an interactive vibration severity test tool based on the ISO 10816-3 standard. Furthermore, Vibra Calc has a calculator for vibration conversions from/to displacement, velocity, and acceleration with metric and imperial units.

Features:
- Induction Motor Frequency Calculator 
- Full detailed gears frequencies (main, harmonics, sidebands) up to 4X
- Rolling element  frequencies (BPFI, BPFO, BSF, FTF) given the bearing dimension or the bearing model number
- Pump vane pass frequencies up to 4X
- Fans blade pass frequencies up to 4X
- Journal bearing frequencies corresponding to wear and oil whirl phenomena presented in a table and over an interactive chart
- Belt frequencies up to 4X
- Interactive Vibration Severity Test Tool based on ISO 10816-3 (INPUTS: vibration velocity in mm/s or inch/s, type of support, type of machine & OUTPUTS: Machine Operation Condition)
- E-mail and Save the screen option for vibration severity tool
- Vibration calculator to convert displacement/velocity/accelerations to each other (Metric & Imperial)
- Vibration Glossary 
- Metric and Imperial units provided for all input dimensions


DISCLAIMER:
Vibra Calc is intended for educational purposes. Although the calculations by this app were made with great care, it may contain error or inaccuracies. Using the results of the calculations is the responsibility of the user.

## Key features

- 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

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/vibra-calc/id458723288/reviews.md

### 1/5 — Ouff!

*2023-07-13*

Vraiment pas complet ce truc...

### 4/5 — definitely I recommend this App

*2012-03-21*

If you are in rotating machinery industry, either as an specialist, technician student or and expert you MUST have this APP.. 

It has many tools for condition monitoring, vibration and frequency calculations of the rotating machinery components..

I love this.. Handy and useful

## Frequently asked questions about Vibra Calc

### What types of machinery components can Vibra Calc analyze?

Vibra Calc can calculate vibration frequencies for induction motors, gears, rolling element bearings, pumps, fans & blowers, journal bearings, and belts & pulleys.

### Does Vibra Calc include a vibration severity test?

Yes, Vibra Calc features an interactive vibration severity test tool based on the ISO 10816-3 standard, providing machine operation conditions based on vibration velocity inputs.

### Can Vibra Calc convert vibration units?

Yes, Vibra Calc includes a calculator to convert vibration from displacement, velocity, and acceleration to each other, supporting both metric and imperial units.

### What is the learning methodology of Vibra Calc?

Vibra Calc is intended for educational purposes, providing detailed calculations and tools to help users understand vibration phenomena in rotating machinery.

### How often is Vibra Calc updated?

The app was last updated on February 14, 2018, with version 1.2. It is available on iPhone, iPad, and iPod.

### What is the age rating for Vibra Calc?

Vibra Calc has an age rating of 4+, making it suitable for a wide range of users interested in learning about machinery vibrations.

### Does Vibra Calc have ads?

No, Vibra Calc does not contain advertisements, providing an uninterrupted user experience for its calculations and tools.

### What is the user sentiment for Vibra Calc?

Based on limited data, Vibra Calc has a rating of 4.0 stars from 2 ratings, indicating a generally positive reception from its users.

## Version history (last 3 releases)

### 1.2 — 2018-02-14

This app has been updated by Apple to display the Apple Watch app icon.

- Added support for latest OS

### 1.1 — 2011-09-15

- Available for iOS 3.2 and higher

### 1.0 — 2011-08-26

No release notes.

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## More apps by Motionics LLC

- [iWindTurbine](https://appshunter.io/ios/app/iwindturbine/id424498956)
- [iRotorBalance](https://appshunter.io/ios/app/irotorbalance/id430978753)
- [iAlignCalc](https://appshunter.io/ios/app/ialigncalc/id441151338)
- [VibraUnits](https://appshunter.io/ios/app/vibraunits/id445231670)
- [REBvibe](https://appshunter.io/ios/app/rebvibe/id445515440)
- [VibeSpectra](https://appshunter.io/ios/app/vibespectra/id448014799)

All apps by Motionics LLC: https://appshunter.io/developer/424498959

## Related topics

[vibration analysis](https://appshunter.io/ios/topics/vibration-analysis)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*