# Audio Spectrum Analyzer vs Frequency

The clearest difference is price: Frequency at Free against Audio Spectrum Analyzer's $3.99. Frequency also leads on rating (4.7 vs 3.9) and update cadence (fortnightly vs every 7 months). Audio Spectrum Analyzer's advantage is ads (none vs shown) and iOS requirement (6.0 vs 16.0). On in-app purchases and device support there is nothing between them.

Frequency is free to download; Audio Spectrum Analyzer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Frequency holds the better App Store score, 4.7 against 3.9. That said, the two scores are not equally well evidenced: Frequency has 340 ratings behind it against 52, so its average is the more settled of the two. Written reviews point the same way: 54% of Audio Spectrum Analyzer's written reviews are positive against 73% of Frequency's.

Audio Spectrum Analyzer ships an update every 7 months, Frequency fortnightly. Both last shipped on October 14, 2026.

## The numbers

| Metric | Audio Spectrum Analyzer | Frequency |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [3.9 (52 ratings)](https://appshunter.io/ios/app/audio-spectrum-analyzer/id373620982/reviews) | **[4.7 (340 ratings)](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664/reviews)** |
| Number of ratings | 52 | **340** |
| Positive reviews | 54.4% of reviews | **72.7% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 8 MB |
| Requires iOS | **6.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Lucija Jaksic](https://appshunter.io/developer/1721391925) |

## 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


### Frequency

[App page](https://appshunter.io/ios/app/frequency-sound-generator/id6474342664)

Generate various sound waves, including sine, square, sawtooth, and triangle, with adjustable frequencies from 1Hz to 22000Hz. Visually observe animated sound waves and control volume. Useful for testing hearing, speakers, instruments, and even cleaning water from speakers.

**Highlights:** Generate sine, square, sawtooth, triangle waves, Adjustable frequency (1Hz-22000Hz), Animated sound wave visualization, Volume control (0-100%), Note selection, Speaker cleaning function

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and easy to use interface
- 🎵 Accurate frequency generation
- 💰 Free application
- 🧘 Helpful for meditation and stress relief
- 🔧 Multiple waveform options (sine, square, triangular, sawtooth)

**What reviewers complain about**

- 📢 Intrusive and inappropriate advertisements
- 🔊 Potential audio damage to speakers/hearing
- 🔒 Privacy concerns and data collection issues
- 📱 UI elements off-screen on compact devices
- 🎚️ Difficult frequency selection with slider

**Reported bugs**

- Slider snaps to certain numbers, skipping decimals
- Missing specific frequencies (431Hz, 432Hz, 128Hz)
- Settings/controls off-screen on smaller devices
- App crashes when switching between applications

**Requested features**

- Manual text input for precise frequency selection
- Ad-free paid version option
- Timer feature for sessions
- Digital tuning with +/- buttons on main screen
- Background image customization or frequency healing chart


## Frequently asked questions

### Is Audio Spectrum Analyzer free?

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

### Is Frequency free?

Frequency is free to download, with no in-app purchases.

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

Frequency is rated higher. Audio Spectrum Analyzer averages 3.9 out of 5 from 52 ratings, while Frequency averages 4.7 from 340 ratings.

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

Frequency shows ads; Audio Spectrum Analyzer does not.

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

Audio Spectrum Analyzer ships an update every 7 months, and Frequency fortnightly. Most recently, Audio Spectrum Analyzer was updated on October 14, 2026 and Frequency on October 14, 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.*