Vibra Calc vs OrbitCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vibra Calc
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.
- 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
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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.
OrbitCalc
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.
- Orbital calculations from parameters or vectors
- Save and revisit previous calculations
- History page for managing saved work
- Customizable measurement units
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OrbitCalc – Satellite Orbit Calculator OrbitCalc is a powerful and intuitive tool designed for space enthusiasts, engineers, and researchers to calculate satellite orbits with precision. Whether you need to determine orbital parameters from vectors or vice versa, OrbitCalc provides accurate results in just a few taps. Key Features: • Orbital Calculations – Compute satellite orbits based on orbital parameters or vector data effortlessly. • Save Your Calculations – Keep track of your work and revisit previous calculations anytime. • History Page – View and manage all your saved calculations in one place. • Customizable Measurement Units – Adjust unit preferences to suit your needs. Whether you're a student, researcher, or space professional, OrbitCalc is your go-to app for orbital mechanics calculations. Download OrbitCalc today and explore the universe with precision!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Vibra Calc | OrbitCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 39 months | — |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 8.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 22 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Motionics LLC | Bian Dhoan Kwik |
Customer experience
Vibra Calc
OrbitCalc
In-app purchases
Vibra Calc
No in-app purchases
OrbitCalc
- OrbitCalc Pro$0.99
Questions
Is Vibra Calc free?
Is OrbitCalc free?
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