Comparison

VibraUnits vs Mobius iVibeXL

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

Mobius iVibeXL

Features
Read full description

Mobius iVibe provides an easy way to look up machine fault conditions based on spectrum symptoms and machine types. You’ll see sample spectra, explanations of faults, and explanations of how to diagnose fault conditions. It is like a wall chart for your iPhone/iPod Touch. 1. Select from a list of symptoms and drill down to find machine faults 2. Select from a list of machine types and drill down to see the likely faults 3. Select from a list of fault types and drill down to see sample spectra. 4. Or just scroll through 80 spectral images. When you see a spectrum (often with phase information and a machine image) you can swipe up and down to see other similar spectra, or swipe left and right to see a page of details, and a page of diagnostic information (how to be sure the diagnosis is correct). Here are a few more details: 1. Select from a list of symptoms (high 1X, high 2X, harmonics, etc.) and drill down to find machine faults that might be a match (unbalance, misalignment, looseness, etc.) 2. Select from a list of machine types (motor, bearings, pumps, etc.) and drill down to see the likely faults (broken rotor bars, wear, cavitation, etc.) 3. Select from a list of fault types (unbalance, misalignment, looseness, etc.) and drill down to see sample spectra. 4. Or you can just scroll through 80 spectral images until you find what you want. It is cool. It is helpful. And this is just the beginning!

Screenshots

VibraUnits4 screens

Verdict

The call

The clearest difference is update cadence: VibraUnits at every 10 months against Mobius iVibeXL's every 46 months. VibraUnits also leads on device support (3 vs 1) and iOS requirement (7.0 vs 12.0). On price, 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.

UpkeepUpdate frequency

VibraUnits ships an update every 10 months, Mobius iVibeXL every 46 months. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
VibraUnits versus Mobius iVibeXL: the parameters behind the verdict, then further details
ParameterVibraUnitsMobius iVibeXL
PriceFreeFree
Rating4.6 (9 ratings) — better—
Positive reviews87.5% of reviews—
Number of ratings9 — better—
Update frequencyEvery 10 months — betterEvery 46 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS7.0 — better12.0
Further details — not scored
Size8 MB38 MB
Age rating+44+
DeveloperMotionics LLCMobius Insitute

In-app purchases

None

VibraUnits

No in-app purchases

None

Mobius iVibeXL

No in-app purchases

Questions

Is VibraUnits free?
VibraUnits is free to download, with no in-app purchases.
Is Mobius iVibeXL free?
Mobius iVibeXL is free to download, with no in-app purchases.
Do VibraUnits or Mobius iVibeXL have ads?
Neither VibraUnits nor Mobius iVibeXL shows ads.
Which is updated more often, VibraUnits or Mobius iVibeXL?
VibraUnits ships an update every 10 months, and Mobius iVibeXL every 46 months. Most recently, VibraUnits was updated on November 1, 2026 and Mobius iVibeXL on October 26, 2026.

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