# Spectrum Analyzer vs Frequency Generator (Sound)

The clearest difference is review sentiment: Frequency Generator (Sound) at 50% against Spectrum Analyzer's 5%. Frequency Generator (Sound) also leads on iOS requirement (13.0 vs 16.0). Spectrum Analyzer's advantage is rating (4.2 vs 3.2) and update cadence (fortnightly vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Spectrum Analyzer sells 13 in-app purchases, starting at $4.99 per 7 days and Frequency Generator (Sound) sells 1 in-app purchase, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Spectrum Analyzer holds the better App Store score, 4.2 against 3.2. That said, the two scores are not equally well evidenced: Spectrum Analyzer has 198 ratings behind it against 6, so its average is the more settled of the two. Written reviews complicate that: 5% of Spectrum Analyzer's written reviews are positive against 50% of Frequency Generator (Sound)'s, so the app with the better star average is not the one people write more warmly about.

Spectrum Analyzer ships an update fortnightly, Frequency Generator (Sound) every 3 months. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Spectrum Analyzer | Frequency Generator (Sound) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (198 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895/reviews)** | [3.2 (6 ratings)](https://appshunter.io/ios/app/frequency-generator-sound/id6596757315/reviews) |
| Number of ratings | **198** | 6 |
| Positive reviews | 5.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Freemium | Free with in-app purchases |
| Size | 100 MB | 28 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Music Breath](https://appshunter.io/developer/1140008995) | [NETIGEN Kluzowicz sp. j.](https://appshunter.io/developer/892331873) |

## What reviewers say

### Spectrum Analyzer

[App page](https://appshunter.io/ios/app/spectrum-analyzer-spectrogram/id981810895)

Visualize audio frequencies with real-time analysis. Features include a sound level meter, multichannel harmonic analysis, and adjustable graphical representations. Gain insights into your sound environment with advanced tools.

**Highlights:** Sound level meter, Multichannel harmonic analysis, Adjustable graphics, AI-powered sound source analyzer, Real-time analysis, FFT analysis

**Features:** macOS Compatibility

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pitch Finder: Audio Visualizer | $4.99 | per 7 days |
| Pitch Finder: Audio Visualizer | $9.99 | per month |
| One Month Sale | $9.99 | per month |
| 1 Week Subscription | $9.99 | per 7 days |
| 1 Year Sub. with discount | $19.99 | per year |
| 1 Month Subscription | $19.99 | per month |
| 3 Month Subscription | $25.99 | per 3 months |
| 1 Year Subscription | $39.99 | per year |
| 2 months subscription | $39.99 | per 2 months |
| No Ads | $9.99 | one-time |
| Additional Settings Controls | $15.99 | one-time |
| Full Pack + No Ads | $19.99 | one-time |
| Get More | $19.99 | one-time |

**What reviewers like**

- ✅ Accurate frequency identification
- ✅ Clear and easy-to-read display
- ✅ Useful noise floor setup feature
- ✅ Works well when ads are removed

**What reviewers complain about**

- 💰 Extremely aggressive monetization strategy
- 📢 Excessive and intrusive ads
- 🔊 Loud ads that ignore device mute settings
- 🚫 Requires subscription/payment to access core features
- 😤 Deceptive purchase practices and accidental charges

**Reported bugs**

- App becomes unusable after iOS 16 update
- Crashes immediately on iPhone 5 with iOS 7
- Cannot exit app on iPhone X without reboot
- App freezes when changing settings or views
- Inaccurate frequency readings

**Requested features**

- Audio file import functionality
- Customizable background colors for chroma key compatibility
- Ability to record audio instead of only analyzing
- Better documentation and help files
- Improved sensitivity for detecting soft sounds


### Frequency Generator (Sound)

[App page](https://appshunter.io/ios/app/frequency-generator-sound/id6596757315)

Generate various sound waves, from sine to triangle, with adjustable frequencies and volumes. Test speakers, tune instruments, or create multi-oscillator soundscapes. Customize your audio experience with a range of settings and themes.

**Highlights:** Generate sine, square, sawtooth, or triangle sound waves, Adjust frequency from 1Hz to 22000Hz, Control volume and balance (left/right), Multi-oscillator mode for three simultaneous sounds, Customizable frequency range slider, Low latency audio setting, Theme customization

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week subscription | $0.99 | per 7 days |


## Frequently asked questions

### Is Spectrum Analyzer free?

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

### Is Frequency Generator (Sound) free?

Frequency Generator (Sound) is free to download, with in-app purchases available.

### Which has better reviews, Spectrum Analyzer or Frequency Generator (Sound)?

Spectrum Analyzer is rated higher. Spectrum Analyzer averages 4.2 out of 5 from 198 ratings, while Frequency Generator (Sound) averages 3.2 from 6 ratings.

### Do Spectrum Analyzer or Frequency Generator (Sound) have ads?

Both Spectrum Analyzer and Frequency Generator (Sound) show ads.

### Which is updated more often, Spectrum Analyzer or Frequency Generator (Sound)?

Spectrum Analyzer ships an update fortnightly, and Frequency Generator (Sound) every 3 months. Most recently, Spectrum Analyzer was updated on October 16, 2026 and Frequency Generator (Sound) on October 10, 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.*