# Audio / Spectrum Analyzer vs Frequency Generator

The clearest difference is review sentiment: Audio / Spectrum Analyzer at 78% against Frequency Generator's 24%. Audio / Spectrum Analyzer also leads on rating (4.6 vs 4.4) and ratings volume (1.1K vs 83). Frequency Generator's advantage is ads (none vs shown). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. Audio / Spectrum Analyzer sells 1 one-off in-app purchase and Frequency Generator sells 6 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

Audio / Spectrum Analyzer holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Audio / Spectrum Analyzer has 1.1K ratings behind it against 83, so its average is the more settled of the two. Written reviews point the same way: 78% of Audio / Spectrum Analyzer's written reviews are positive against 24% of Frequency Generator's.

Audio / Spectrum Analyzer ships an update every 2 weeks, Frequency Generator every 3 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | Audio / Spectrum Analyzer | Frequency Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.1K ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id1508848574/reviews)** | [4.4 (83 ratings)](https://appshunter.io/ios/app/frequency-generator-tone-and-hz/id1607976184/reviews) |
| Number of ratings | **1.1K** | 83 |
| Positive reviews | **78.3% of reviews** | 23.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 5 MB | 26 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Loop-Sessions.LLC.](https://appshunter.io/developer/414215366) | [Sunshine Software Labs](https://appshunter.io/developer/1788219451) |

## What reviewers say

### Audio / Spectrum Analyzer

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

Analyze audio signals in real-time with waveform, amplitude spectrum, and spectrogram displays. Offers detailed customization for FFT size, window functions, and frequency weighting. Includes tools for generating basic waveforms and measurement signals.

**Highlights:** Simultaneous Waveform, Spectrum, Spectrogram display, Customizable FFT size and window functions, Frequency weighting (Flat, dBA, dBC), Octave analysis, Basic waveform and measurement signal generation, Peak hold and spectrum tilt

**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


### Frequency Generator

[App page](https://appshunter.io/ios/app/frequency-generator-tone-and-hz/id1607976184)

Generate sound waves from 1Hz to 40000Hz with various waveforms. Analyze audio frequencies, test hearing, and use for relaxation or speaker cleaning. Offers a sleep timer for peaceful rest.

**Highlights:** Multiple waveform generation (Sine, Triangle, Sawtooth, Square), Real-time frequency and sound level analysis, Hearing test and monitoring, Sleep timer for relaxation, Speaker cleaning function, Educational sound wave exploration

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 7 Day Free Then Get Premium | $9.99 | per year |
| 3 Days Free Trial Weekly VIP | $9.99 | per 7 days |
| 3 Days Free Trial then Get Premium | $19.99 | per month |
| Get Premium Annual | $49.99 | per year |
| 7 Day Free Yearly VIP | $49.99 | per year |
| Get Premium One Time Purchase | $19.99 | one-time |


## Frequently asked questions

### Is Audio / Spectrum Analyzer free?

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

### Is Frequency Generator free?

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

### Which has better reviews, Audio / Spectrum Analyzer or Frequency Generator?

Audio / Spectrum Analyzer is rated higher. Audio / Spectrum Analyzer averages 4.6 out of 5 from 1.1K ratings, while Frequency Generator averages 4.4 from 83 ratings.

### Do Audio / Spectrum Analyzer or Frequency Generator have ads?

Audio / Spectrum Analyzer shows ads; Frequency Generator does not.

### Which is updated more often, Audio / Spectrum Analyzer or Frequency Generator?

Audio / Spectrum Analyzer ships an update every 2 weeks, and Frequency Generator every 3 weeks. Most recently, Audio / Spectrum Analyzer was updated on November 7, 2026 and Frequency Generator on November 7, 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.*