# Audio Spectrum Analyzer vs Vibration Meter, seismograph

The clearest difference is price: Vibration Meter, seismograph at Free against Audio Spectrum Analyzer's $3.99. Vibration Meter, seismograph also leads on rating (4.7 vs 3.9) and ratings volume (717 vs 52). Audio Spectrum Analyzer's advantage is in-app purchases (none vs 1) and review sentiment (54% vs 42%). On update cadence, ads and device support there is nothing between them.

Vibration Meter, seismograph is free to download; Audio Spectrum Analyzer costs $3.99 up front. Vibration Meter, seismograph sells 1 one-off in-app purchase. Audio Spectrum Analyzer asks for nothing beyond the download.

Vibration Meter, seismograph holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Vibration Meter, seismograph has 717 ratings behind it against 52, so its average is the more settled of the two. Written reviews complicate that: 54% of Audio Spectrum Analyzer's written reviews are positive against 42% of Vibration Meter, seismograph's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 7 months. Both last shipped on October 18, 2026.

## The numbers

| Metric | Audio Spectrum Analyzer | Vibration Meter, seismograph |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id373620982/reviews) | **[4.7 (717 ratings)](https://appshunter.io/ios/app/vibration-meter-seismograph/id1137580201/reviews)** |
| Number of ratings | 52 | **717** |
| Positive reviews | **54.4% of reviews** | 41.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#166** | — |
| Size | 1 MB | 18 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [ExaMobile S.A.](https://appshunter.io/developer/506014841) |

## What reviewers say

### Audio Spectrum Analyzer

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id373620982)

**Currently charting:** #166 Top Paid · Utilities (US App Store)

Transform your iOS device into a powerful audio spectrum analyzer. Visualize frequencies up to 20 kHz with customizable display options including frequency span, FFT size, and logarithmic views. Enhance analysis with filtering, peak hold, and adjustable decay rates.

**Highlights:** Frequency analysis up to 20 kHz, Adjustable frequency span and FFT size, Logarithmic frequency display, Graph fill mode toggle, Up to five frequency markers, Spectrum filtering and averaging, Peak hold with adjustable decay rate

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Handy for recording studio
- 👍 Excellent for analyzing noise
- 👍 Intuitive and simple
- 👍 Great for tuning
- 👍 Accurate on iPad mini

**What reviewers complain about**

- 👎 Does not work with newer iPhones
- 👎 Not updated in years
- 👎 Stopped working quickly
- 👎 Sold with false pretenses
- 👎 Extremely slow on iPhone 7

**Reported bugs**

- No way to exit on iPhones without Home button
- Doesn't work with iPhone XR
- Stopped working after about 3 minutes
- Zooming sometimes doesn't work
- Resuming app makes it not display frequency data

**Requested features**

- Running average of spectrums
- Ability to exit on iPhones without Home button
- Ability to reset peak hold with a tap
- Go to 40 kHz
- Expand instructions for filtering window


### 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 |


## Frequently asked questions

### Is Audio Spectrum Analyzer free?

Audio Spectrum Analyzer costs $3.99, with no in-app purchases.

### Is Vibration Meter, seismograph free?

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

### Which has better reviews, Audio Spectrum Analyzer or Vibration Meter, seismograph?

Vibration Meter, seismograph is rated higher. Audio Spectrum Analyzer averages 3.9 out of 5 from 52 ratings, while Vibration Meter, seismograph averages 4.7 from 717 ratings.

### Do Audio Spectrum Analyzer or Vibration Meter, seismograph have ads?

Neither Audio Spectrum Analyzer nor Vibration Meter, seismograph shows ads.

### Which is updated more often, Audio Spectrum Analyzer or Vibration Meter, seismograph?

Audio Spectrum Analyzer ships an update every 7 months, and Vibration Meter, seismograph every 7 months. Most recently, Audio Spectrum Analyzer was updated on October 18, 2026 and Vibration Meter, seismograph on October 18, 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.*