# Frequency Analyzer vs FlexiGas

The clearest difference is in-app purchases: FlexiGas at none against Frequency Analyzer's 10. FlexiGas also leads on iOS requirement (15.1 vs 17.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Frequency Analyzer sells 10 in-app purchases, starting at $2.99 per 7 days. FlexiGas asks for nothing beyond the download.

Frequency Analyzer ships an update weekly, FlexiGas every 10 days. The most recent releases landed on November 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Frequency Analyzer | FlexiGas |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (187 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** | — |
| Number of ratings | **187** | — |
| Positive reviews | 9.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 22 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [FLEXIGAS LIMITED](https://appshunter.io/developer/1886681056) |

## 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 real-time FFT, SPL monitoring, and advanced visualization. Record, analyze, and export high-quality audio and video data for various acoustic applications.

**Highlights:** Real-time FFT analysis, Calibrated SPL measurement, High-resolution spectrum analyzer, Real-time waveform display, 32-bit float audio recording, Synchronized video recording, Export WAV, CSV, images, and videos

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| 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 |


### FlexiGas

[App page](https://appshunter.io/ios/app/flexigas/id6760897957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Frequency Analyzer free?

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

### Is FlexiGas free?

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

### Do Frequency Analyzer or FlexiGas have ads?

Neither Frequency Analyzer nor FlexiGas shows ads.

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

Frequency Analyzer ships an update weekly, and FlexiGas every 10 days. Most recently, Frequency Analyzer was updated on November 4, 2026 and FlexiGas on October 24, 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.*