# Chladni Screen vs Audio / Spectrum Analyzer

The clearest difference is price: Audio / Spectrum Analyzer at Free against Chladni Screen's $1.99. Audio / Spectrum Analyzer also leads on review sentiment (79% vs 49%) and update cadence (every 2 weeks vs every 8 months). Chladni Screen's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating and device support there is nothing between them.

Audio / Spectrum Analyzer is free to download; Chladni Screen costs $1.99 up front. Audio / Spectrum Analyzer sells 1 one-off in-app purchase. Chladni Screen asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.6 for Chladni Screen against 4.6 for Audio / Spectrum Analyzer. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1.1K ratings behind it against 81, so its average is the more settled of the two. Written reviews are what separate them: 49% of Chladni Screen's written reviews are positive against 79% of Audio / Spectrum Analyzer's.

Chladni Screen ships an update every 8 months, Audio / Spectrum Analyzer every 2 weeks. Both last shipped on October 29, 2026.

## The numbers

| Metric | Chladni Screen | Audio / Spectrum Analyzer |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.6 (81 ratings)](https://appshunter.io/ios/app/chladni-screen/id1385177377/reviews) | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** |
| Number of ratings | 81 | **1.1K** |
| Positive reviews | 48.6% of reviews | **78.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | **#153** | — |
| Size | 1 MB | 5 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Narumi Inada](https://appshunter.io/developer/1347729163) | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) |

## What reviewers say

### Chladni Screen

[App page](https://appshunter.io/ios/app/chladni-screen/id1385177377)

**Currently charting:** #153 Top Paid · Music (US App Store)

Explore the mesmerizing patterns created by sound vibrations on a digital surface. This app simulates Chladni figures, visualizing how different sounds, including your voice and instruments, create intricate geometric shapes.

**Highlights:** Simulates Chladni figures digitally, Visualizes sound vibrations, Uses voice and instruments as sound sources, Displays geometric patterns, Offers multiple display modes

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

**In-app purchases:** none


### Audio / Spectrum Analyzer

[App page](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574)

This application analyzes audio input from your microphone, displaying both the waveform and amplitude spectrum in real-time. It offers extensive customization for display, calculation, and signal generation.

**Highlights:** Simultaneous waveform and spectrum display, Configurable display layouts, Selectable FFT size and averaging, Frequency weighting options (Flat, dBA, dBC), Octave band analysis, Audio signal and noise generation, Peak hold and pitch meter

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro (Remove ads, High-Res analysis) | $11.99 | one-time |

**What reviewers like**

- 👍 Customizable features
- ⚙️ Accurate measurements
- 🚀 Helpful for troubleshooting
- 💡 Useful for ghost hunting

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔋 High battery and CPU usage
- 🚫 Inappropriate ads/content
- 🔒 Security concerns with payment info

**Reported bugs**

- Stuck on latest measurement
- White noise instead of expected functionality
- Disconnects AirPods

**Requested features**

- Sampling rate adjustment
- Wave shape tracking
- Audio file analysis
- Octave analysis


## Frequently asked questions

### Is Chladni Screen free?

Chladni Screen costs $1.99, with no in-app purchases.

### Is Audio / Spectrum Analyzer free?

Audio / Spectrum Analyzer is free to download, with in-app purchases available.

### Which has better reviews, Chladni Screen or Audio / Spectrum Analyzer?

Audio / Spectrum Analyzer is rated higher. Chladni Screen averages 4.6 out of 5 from 81 ratings, while Audio / Spectrum Analyzer averages 4.6 from 1.1K ratings.

### Do Chladni Screen or Audio / Spectrum Analyzer have ads?

Audio / Spectrum Analyzer shows ads; Chladni Screen does not.

### Which is updated more often, Chladni Screen or Audio / Spectrum Analyzer?

Chladni Screen ships an update every 8 months, and Audio / Spectrum Analyzer every 2 weeks. Most recently, Chladni Screen was updated on October 29, 2026 and Audio / Spectrum Analyzer on October 29, 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.*