Comparison

Vibra Calc vs Noria Academy

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

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
Read full description

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.

About

Noria Academy

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
Read full description

Obtaining certification can be a challenge; new terms, concepts and topics can overwhelm even the most experienced reliability experts. Training experts all agree that extending the learning beyond the classroom dramatically increases knowledge retention. To aid in this retention and create an innovative student experience, Noria is pleased to offer the Noria Academy app. With a robust and responsive design, the Noria Academy app’s different study modes include flashcards with the ability to sort the cards by confidence level and specific topics. The app also features practice exams, containing multiple choice questions from all topic areas, and students have the option to simulate an actual exam or do a quick question review. Comprehensive charts provide instant feedback for the student, demonstrating guidance on topics that are mastered or need additional attention. We make it easy to prepare for certification exams like the International Council for Machinery Lubrication's (ICML) Level I and II Machinery Lubrication Technician (MLT I / MLT II) certification, Level II and III Machine Lubricant Analyst (MLA II / MLA III) certification, and Machinery Lubrication Engineer (MLE) certification, as well as other reliability certifications. All study materials align with classroom course content, allowing students to begin studying even before the class starts. A free Noria account provides students with instant access to the study aids for their specific course. Get started on the journey towards certification with Noria Academy. Email education@noria.com for more information or to discuss course options.

Screenshots

Vibra Calc4 screens
Noria Academy4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
Vibra Calc versus Noria Academy: the parameters behind the verdict, then further details
ParameterVibra CalcNoria Academy
PriceFreeFree
Rating4.0 (2 ratings)5.0 (4 ratings) — better
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings24 — better
Update frequencyEvery 39 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS8.0 — better15.6
Further details — not scored
Size22 MB30 MB
Age rating+44+
DeveloperMotionics LLCNoria Corporation

Customer experience

Vibra Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Noria Academy

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Vibra Calc

No in-app purchases

None

Noria Academy

No in-app purchases

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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