# Vibration Meter, seismograph vs Low Frequency Detector

The clearest difference is price: Vibration Meter, seismograph at Free against Low Frequency Detector's $9.99. Vibration Meter, seismograph also leads on rating (4.7 vs 2.8) and ratings volume (729 vs 6). Low Frequency Detector's advantage is in-app purchases (none vs 1) and review sentiment (50% vs 42%). On update cadence and ads there is nothing between them.

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

Vibration Meter, seismograph holds the better App Store score, 4.7 against 2.8. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 729 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 42% of Vibration Meter, seismograph's written reviews are positive against 50% of Low Frequency Detector's, so the app with the better star average is not the one people write more warmly about.

Vibration Meter, seismograph ships an update every 7 months, Low Frequency Detector every 9 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Vibration Meter, seismograph | Low Frequency Detector |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.7 (729 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** | [2.8 (6 ratings)](https://appshunter.io/ios/app/low-frequency-detector/id1196584147/reviews) |
| Number of ratings | **729** | 6 |
| Positive reviews | 41.7% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 18 MB | 1 MB |
| Requires iOS | **12.0** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ExaMobile S.A.](https://appshunter.io/developer/506014841) | [TOON,LLC](https://appshunter.io/developer/633948723) |

## What reviewers say

### Vibration Meter, seismograph

[App page](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201)

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:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $1.99 | one-time |


### Low Frequency Detector

[App page](https://appshunter.io/ios/app/low-frequency-detector/id1196584147)

This tool measures and analyzes low-frequency sounds that are difficult for the human ear to detect. It helps identify potential noise pollution from sources like construction or factories, providing detailed reports on frequency components and sound levels.

**Highlights:** Low-frequency power level measurement (<100Hz), Audible band power level measurement (Leq), 1/3 octave band analysis (OCT), FFT analysis (FFT), Time course graph (TIME), Measurement report generation, Calibration function

**In-app purchases:** none


## Frequently asked questions

### Is Vibration Meter, seismograph free?

Vibration Meter, seismograph is free to download, with in-app purchases available.

### Is Low Frequency Detector free?

Low Frequency Detector costs $9.99, with no in-app purchases.

### Which has better reviews, Vibration Meter, seismograph or Low Frequency Detector?

Vibration Meter, seismograph is rated higher. Vibration Meter, seismograph averages 4.7 out of 5 from 729 ratings, while Low Frequency Detector averages 2.8 from 6 ratings.

### Do Vibration Meter, seismograph or Low Frequency Detector have ads?

Neither Vibration Meter, seismograph nor Low Frequency Detector shows ads.

### Which is updated more often, Vibration Meter, seismograph or Low Frequency Detector?

Vibration Meter, seismograph ships an update every 7 months, and Low Frequency Detector every 9 months. Most recently, Vibration Meter, seismograph was updated on October 26, 2026 and Low Frequency Detector on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*