Comparison

VibraUnits 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

VibraUnits

This application facilitates the conversion of mechanical vibration analysis units. It supports conversions between displacement, velocity, and acceleration, along with frequency and various amplitude scales.

Highlights
  • Velocity, acceleration, displacement conversion
  • Frequency conversion (Hz to CPM)
  • Displacement conversion (mils to microns)
  • Velocity conversion (inch/s to mm/s)
  • Acceleration conversion (G's to m/s^2)
Features
Read full description

VibraUnits converts amplitudes of the most commonly used units in mechanical vibration analysis. The vibration equations used for changing units between displacement-velocity-acceleration only apply to vibration occurring at a discrete frequency (sinusoidal waves). Features: - Conversion between velocity, acceleration and displacement - Frequency conversion between Hz and CPM - Displacement conversion between mils and microns (RMS, 0-peak & peak-peak) - Velocity conversion between inch/s and mm/s (RMS, 0-peak & peak-peak) - Acceleration conversion between G's and m/s^2 (RMS, 0-peak & peak-peak) Disclaimer: This app is intended for educational purposes, although the calculations were made with great care, it may contain errors 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

VibraUnits4 screens
Noria Academy4 screens

Verdict

The call

The clearest difference is rating: Noria Academy at 5.0 against VibraUnits's 4.6. Noria Academy also leads on update cadence (every 4 months vs every 10 months) and review sentiment (100% vs 88%). VibraUnits's advantage is iOS requirement (7.0 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 4.6. Both are backed by a comparable volume of ratings — 9 and 4 respectively. Written reviews point the same way: 88% of VibraUnits's written reviews are positive against 100% of Noria Academy's.

UpkeepUpdate frequency

VibraUnits ships an update every 10 months, Noria Academy every 4 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 6 level
VibraUnits versus Noria Academy: the parameters behind the verdict, then further details
ParameterVibraUnitsNoria Academy
PriceFreeFree
Rating4.6 (9 ratings)5.0 (4 ratings) — better
Positive reviews87.5% of reviews100.0% of reviews — better
Number of ratings9 — better4
Update frequencyEvery 10 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS7.0 — better15.6
Further details — not scored
Size8 MB30 MB
Age rating4+4+
DeveloperMotionics LLCNoria Corporation

Customer experience

VibraUnits

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews8 reviews
Positive87.5%
Neutral0.0%
Negative12.5%

Noria Academy

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

In-app purchases

None

VibraUnits

No in-app purchases

None

Noria Academy

No in-app purchases

Questions

Is VibraUnits free?
VibraUnits 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, VibraUnits or Noria Academy?
Noria Academy is rated higher. VibraUnits averages 4.6 out of 5 from 9 ratings, while Noria Academy averages 5.0 from 4 ratings.
Do VibraUnits or Noria Academy have ads?
Neither VibraUnits nor Noria Academy shows ads.
Which is updated more often, VibraUnits or Noria Academy?
VibraUnits ships an update every 10 months, and Noria Academy every 4 months. Most recently, VibraUnits was updated on October 23, 2026 and Noria Academy on October 7, 2026.

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