Comparison

Vibration Meter, seismograph vs IntervAI

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

Head to head
About

Vibration Meter, seismograph

This application uses your phone's accelerometer to measure and record vibrations from various sources, including earthquakes and everyday objects. It displays ground motion on a graph and uses an instrumental intensity scale for analysis. You can also monitor and share your measurement results.

Highlights
  • Measures vibration strength
  • Detects seismic waves
  • Uses accelerometer for analysis
  • Displays ground motion graph
  • Utilizes instrumental intensity scale
  • Monitors and shares results
Features
Read full description

Vibration meter is an app called seismograph or seismometer, which measures the strength of vibration, quakes, earthquakes, vibrations of the human body or any other objects around you. Our app allows for detecting and recording of seismic waves generated by earthquakes, volcanic eruptions, avalanches and other sources of vibration and shocks. Accelerometer in your mobile phone is used for detection of vibrations and measurement analysis. Graph presents a record of the ground motion at a measuring point. Ground movement or an object is presented as a function of time in the three Cartesian axes, with the z axis perpendicular to the Earth's surface and the x- and y- axes parallel to the surface. Mercalli intensity scale is a seismic scale used for measuring the intensity of an earthquake. It measures the effects of an earthquake and it is distinct from the moment of magnitude. Richter Scale assigns a magnitude number to quantify the energy released by an earthquake. Peak Ground Acceleration (PGA) is equal to the maximum ground acceleration that occurred during earthquake shaking at location. PGA is equal to the amplitude of the largest absolute acceleration recorded on an accelerogram at a site during a particular earthquake. In this app we use Instrumental Intensity Scale (developed by The United States Geological Survey) which maps peak ground acceleration and peak ground velocity on an intensity scale similar to the felt Mercalli Scale. These values are used to create shake maps by seismologists on around the world. Mercalli Intensity Scale distinguishes the following levels of vibration and impact damage: I. Instrumental - Not felt. Recorded by seismographs. II. Weak - Felt only on top floors of high buildings. III. Slight - Felt indoors, like a passing light truck. IV. Moderate - Windows, doors rattle. Like passing train. V. Rather Strong - Felt by all. Small objects upset. VI. Strong - Books off shelves. Trees shake. Damage. VII. Very Strong - Difficult to stand. Buildings damaged. VIII. Destructive - Significant damage. Trees broken. IX. Violent - General panic. Serious damage. Cracks. X. Intense - Most buildings destroyed. Rails bent. XI. Extreme - Rails bent greatly. Pipelines destroyed. XII. Catastrophic - Near total damage. This app allows you monitor and share the results of your measurements with other users. Measure and monitor all vibration and shocks using smartphone or tablet!

About

IntervAI

Features
Read full description

Stop stressing about interviews. IntervAI is your real-time AI copilot that helps you ace technical and behavioral interviews. HOW IT WORKS - Screen sync from Windows/Mac to your iPhone/iPad - Real-time audio transcription - AI-powered answer suggestions - Code analysis and hints PERFECT FOR - Software engineering interviews - Product manager interviews - Behavioral & HR rounds - Coding challenges PRIVACY FIRST - Use your own AI API keys - No data stored on our servers - Works completely offline Download now and never freeze in an interview again!

Screenshots

Vibration Meter, seismograph4 screens
IntervAI1 screens

Verdict

The call

The clearest difference is price: Vibration Meter, seismograph at Free against IntervAI's $9.99. Vibration Meter, seismograph also leads on iOS requirement (12.0 vs 15.0). IntervAI's advantage is in-app purchases (none vs 1) and update cadence (every 3 weeks vs every 7 months). On ads and device support 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

Vibration Meter, seismograph is free to download; IntervAI costs $9.99 up front. Vibration Meter, seismograph sells 1 one-off in-app purchase. IntervAI asks for nothing beyond the download.

UpkeepUpdate frequency

Vibration Meter, seismograph ships an update every 7 months, IntervAI every 3 weeks. The most recent releases landed on October 18, 2026 and October 5, 2026 respectively.

Scorecard4 real differences · 6 level
Vibration Meter, seismograph versus IntervAI: the parameters behind the verdict, then further details
ParameterVibration Meter, seismographIntervAI
PriceFree — better$9.99
Rating4.7 (717 ratings) — better—
Positive reviews41.7% of reviews—
Number of ratings717 — better—
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size18 MB3 MB
Age rating4++4
DeveloperExaMobile S.A.Yu Huang

In-app purchases

1 purchases

Vibration Meter, seismograph

One-time1
  • Remove ads$1.99
None

IntervAI

No in-app purchases

Questions

Is Vibration Meter, seismograph free?
Vibration Meter, seismograph is free to download, with in-app purchases available.
Is IntervAI free?
IntervAI costs $9.99, with no in-app purchases.
Do Vibration Meter, seismograph or IntervAI have ads?
Neither Vibration Meter, seismograph nor IntervAI shows ads.
Which is updated more often, Vibration Meter, seismograph or IntervAI?
Vibration Meter, seismograph ships an update every 7 months, and IntervAI every 3 weeks. Most recently, Vibration Meter, seismograph was updated on October 18, 2026 and IntervAI on October 5, 2026.

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