# PhaseChecker vs Sound Spectrum Analysis

The clearest difference is price: Sound Spectrum Analysis at Free against PhaseChecker's $0.99. Sound Spectrum Analysis also leads on review sentiment (60% vs 16%) and rating (3.6 vs 2.0). PhaseChecker's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Sound Spectrum Analysis is free to download; PhaseChecker costs $0.99 up front. Sound Spectrum Analysis sells 1 one-off in-app purchase. PhaseChecker asks for nothing beyond the download.

Sound Spectrum Analysis holds the better App Store score, 3.6 against 2.0. That said, the two scores are not equally well evidenced: Sound Spectrum Analysis has 42 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 16% of PhaseChecker's written reviews are positive against 60% of Sound Spectrum Analysis's.

PhaseChecker ships an update every 43 months, Sound Spectrum Analysis every 5 weeks. The most recent releases landed on September 17, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | PhaseChecker | Sound Spectrum Analysis |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (3 ratings)](https://appshunter.io/ios/app/phasechecker/id1160400348/reviews) | **[3.6 (42 ratings)](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523/reviews)** |
| Number of ratings | 3 | **42** |
| Positive reviews | 15.8% of reviews | **60.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 5 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 5 MB |
| Requires iOS | **14.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rick Peacock](https://appshunter.io/developer/286052385) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### PhaseChecker

[App page](https://appshunter.io/ios/app/phasechecker/id1160400348)

This utility app tests your sound system to ensure speakers are correctly wired and in-phase. It offers manual and automatic modes, with advanced waveform analysis for precise setup. Proper phasing is crucial for optimal bass response and stereo imaging.

**Highlights:** Speaker phase and polarity testing, Manual and automatic test modes, Microphone-based analysis, Waveform view for advanced users, In-app help and guidance, Audio output connection

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

**In-app purchases:** none


### Sound Spectrum Analysis

[App page](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523)

Analyze sound spectrums in real-time using your device's microphone. This tool offers detailed frequency and amplitude scales, various window functions, and octave band analysis. It can also function as a noise level meter and allows for data export and saving of measurements.

**Highlights:** Real-time sound spectrum analysis, Fast Fourier Transform (FFT) with adjustable size, Linear and logarithmic frequency/amplitude scales, Octave band analysis (1/1, 1/3, 1/6, 1/12), Multiple window functions, A- and C-Weightings, Sound level meter (dB SPL)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


## Frequently asked questions

### Is PhaseChecker free?

PhaseChecker costs $0.99, with no in-app purchases.

### Is Sound Spectrum Analysis free?

Sound Spectrum Analysis is free to download, with in-app purchases available.

### Which has better reviews, PhaseChecker or Sound Spectrum Analysis?

Sound Spectrum Analysis is rated higher. PhaseChecker averages 2.0 out of 5 from 3 ratings, while Sound Spectrum Analysis averages 3.6 from 42 ratings.

### Do PhaseChecker or Sound Spectrum Analysis have ads?

Neither PhaseChecker nor Sound Spectrum Analysis shows ads.

### Which is updated more often, PhaseChecker or Sound Spectrum Analysis?

PhaseChecker ships an update every 43 months, and Sound Spectrum Analysis every 5 weeks. Most recently, PhaseChecker was updated on September 17, 2026 and Sound Spectrum Analysis on September 21, 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.*