# Frequency Analyzer vs Cepstrum

The clearest difference is update cadence: Cepstrum at every 2 days against Frequency Analyzer's every 8 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days and Cepstrum sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Frequency Analyzer ships an update every 8 days, Cepstrum every 2 days. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Frequency Analyzer | Cepstrum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (169 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** | — |
| Number of ratings | **169** | — |
| Positive reviews | 10.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 9 MB |
| Requires iOS | **17.2** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [Tongkun Lan](https://appshunter.io/developer/1870124868) |

## What reviewers say

### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6468837339)

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

**Highlights:** Real-time FFT analysis, Calibrated SPL measurements, 32-bit float audio recording, Synchronized video recording, Spectrogram and octave band analysis, Export WAV, CSV, images, and videos

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Annual | $29.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Pro access for lifetime | $89.99 | one-time |


### Cepstrum

[App page](https://appshunter.io/ios/app/cepstrum/id6799487881)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cepstrum | $4.99 | one-time |


## Frequently asked questions

### Is Frequency Analyzer free?

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

### Is Cepstrum free?

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

### Do Frequency Analyzer or Cepstrum have ads?

Neither Frequency Analyzer nor Cepstrum shows ads.

### Which is updated more often, Frequency Analyzer or Cepstrum?

Frequency Analyzer ships an update every 8 days, and Cepstrum every 2 days. Most recently, Frequency Analyzer was updated on October 13, 2026 and Cepstrum on October 3, 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.*