Attenuator vs Vibration Meter, seismograph
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Attenuator
Calculate output voltage, power, and attenuation based on input values and dB of attenuation. Features NMR-specific calculations for pulses and measures local magnetic fields and barometric pressure.
- Calculate output voltage and power
- Specify input voltage (Vpp or Vrms)
- Calculate attenuation in dB
- NMR pulse calculations
- Measure local magnetic field
- Display barometric pressure
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Attenuator is a utility for anyone working with radio frequency sources and needs to know power and voltage after attenuation. You can specify an input voltage (Vpp or Vrms) and dB of attenuation to get the output voltage, power and attenuation. The impedance can be specified, typically 50Ω for most systems. There is a new emphasis on NMR utility, with options for calculating pulses based on reference power and pulse length. Powers are in Watts, dBm, and dB values. Measure local magnetic field to check stray static fields from magnets. See the local barometric pressure, useful if the magnet boil-off is high
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.
- Measures vibration strength
- Detects seismic waves
- Uses accelerometer for analysis
- Displays ground motion graph
- Utilizes instrumental intensity scale
- Monitors and shares results
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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!
Screenshots
Verdict
The clearest difference is review sentiment: Attenuator at 100% against Vibration Meter, seismograph's 42%. Attenuator also leads on rating (5.0 vs 4.7). Vibration Meter, seismograph's advantage is ratings volume (717 vs 8) and device support (3 vs 1). On price, update cadence, 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
Both are free to download. Attenuator sells 1 one-off in-app purchase and Vibration Meter, seismograph sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Attenuator holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 717 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 100% of Attenuator's written reviews are positive against 42% of Vibration Meter, seismograph's.
Both ship on a similar rhythm, roughly every 7 months. The most recent releases landed on October 1, 2026 and October 18, 2026 respectively.
| Parameter | Attenuator | Vibration Meter, seismograph |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | 4.7 (717 ratings) |
| Positive reviews | 100.0% of reviews — better | 41.7% of reviews |
| Number of ratings | 8 | 717 — better |
| Update frequency | Every 7 months | Every 7 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim E. Burrow | ExaMobile S.A. |
Customer experience
Attenuator
Vibration Meter, seismograph
In-app purchases
Attenuator
- Remove all ads$1.99
Vibration Meter, seismograph
- Remove ads$1.99
Questions
Is Attenuator free?
Is Vibration Meter, seismograph free?
Which has better reviews, Attenuator or Vibration Meter, seismograph?
Do Attenuator or Vibration Meter, seismograph have ads?
Which is updated more often, Attenuator or Vibration Meter, seismograph?
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