# Audio Spectrum Analyzer vs Vibration analysis

The clearest difference is price: Vibration analysis at Free against Audio Spectrum Analyzer's $3.99. Vibration analysis also leads on update cadence (every 3 months vs every 7 months). Audio Spectrum Analyzer's advantage is in-app purchases (none vs 2) and iOS requirement (6.0 vs 15.6). On rating, review sentiment, ratings volume and ads there is nothing between them.

Vibration analysis is free to download; Audio Spectrum Analyzer costs $3.99 up front. Vibration analysis sells 2 one-off in-app purchases. Audio Spectrum Analyzer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.9 for Audio Spectrum Analyzer against 4.0 for Vibration analysis. Both are backed by a comparable volume of ratings — 52 and 43 respectively. Written reviews are what separate them: 54% of Audio Spectrum Analyzer's written reviews are positive against 57% of Vibration analysis's.

Audio Spectrum Analyzer ships an update every 7 months, Vibration analysis every 3 months. The most recent releases landed on September 30, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Audio Spectrum Analyzer | Vibration analysis |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id373620982/reviews) | **[4.0 (43 ratings)](https://appshunter.io/ios/app/vibration-analysis/id817385888/reviews)** |
| Number of ratings | **52** | 43 |
| Positive reviews | 54.4% of reviews | **57.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 5 MB |
| Requires iOS | **6.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### Audio Spectrum Analyzer

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

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 analysis

[App page](https://appshunter.io/ios/app/vibration-analysis/id817385888)

This app analyzes phone accelerometer data to create a vibration spectrum. It helps evaluate vibration strength, frequency, and the rotation speed of various mechanisms like fans and motors. Useful for quality checks, malfunction detection, and balancing homemade rotating parts.

**Highlights:** Vibration spectrum analysis, Rotation speed evaluation, Mechanism quality assessment, Malfunction monitoring, Customizable FFT size, Multiple units of measurement, Peak frequency detection

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Settings | $2.99 | one-time |
| External accelerometer | $2.99 | one-time |


## Frequently asked questions

### Is Audio Spectrum Analyzer free?

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

### Is Vibration analysis free?

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

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

Vibration analysis is rated higher. Audio Spectrum Analyzer averages 3.9 out of 5 from 52 ratings, while Vibration analysis averages 4.0 from 43 ratings.

### Do Audio Spectrum Analyzer or Vibration analysis have ads?

Neither Audio Spectrum Analyzer nor Vibration analysis shows ads.

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

Audio Spectrum Analyzer ships an update every 7 months, and Vibration analysis every 3 months. Most recently, Audio Spectrum Analyzer was updated on September 30, 2026 and Vibration analysis on September 21, 2026.

---

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