# Vibra Calc vs Noria Academy

The clearest difference is review sentiment: Noria Academy at 100% against Vibra Calc's 50%. Noria Academy also leads on rating (5.0 vs 4.0) and update cadence (every 4 months vs every 39 months). Vibra Calc's advantage is iOS requirement (8.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Noria Academy holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 50% of Vibra Calc's written reviews are positive against 100% of Noria Academy's.

Vibra Calc ships an update every 39 months, Noria Academy every 4 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Vibra Calc | Noria Academy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/vibra-calc/id458723288/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/noria-academy/id1437646521/reviews)** |
| Number of ratings | 2 | **4** |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 22 MB | 30 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 4+ |
| Developer | [Motionics LLC](https://appshunter.io/developer/424498959) | [Noria Corporation](https://appshunter.io/developer/570003258) |

## 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


### Noria Academy

[App page](https://appshunter.io/ios/app/noria-academy/id1437646521)

Prepare for machinery lubrication certifications with interactive study modes. Features flashcards, practice exams, and comprehensive charts to track mastery and identify areas needing improvement. Aligns with classroom content for effective pre-course and post-course learning.

**Highlights:** Flashcards with topic sorting, Practice exams (simulated or quick review), Confidence level sorting, Comprehensive progress charts, Alignment with classroom content, Preparation for ICML and MLA certifications

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vibra Calc free?

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

### Is Noria Academy free?

Noria Academy is free to download, with no in-app purchases.

### Which has better reviews, Vibra Calc or Noria Academy?

Noria Academy is rated higher. Vibra Calc averages 4.0 out of 5 from 2 ratings, while Noria Academy averages 5.0 from 4 ratings.

### Do Vibra Calc or Noria Academy have ads?

Neither Vibra Calc nor Noria Academy shows ads.

### Which is updated more often, Vibra Calc or Noria Academy?

Vibra Calc ships an update every 39 months, and Noria Academy every 4 months. Most recently, Vibra Calc was updated on October 29, 2026 and Noria Academy on October 7, 2026.

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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.*