# Frequency Analyzer vs eMudhra SecurePass

The clearest difference is in-app purchases: eMudhra SecurePass at none against Frequency Analyzer's 11. eMudhra SecurePass also leads on device support (3 vs 1) and iOS requirement (15.5 vs 17.2). On price and ads there is nothing between them.

Both are free to download. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days. eMudhra SecurePass asks for nothing beyond the download.

## The numbers

| Metric | Frequency Analyzer | eMudhra SecurePass |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | Every 8 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 49 MB |
| Requires iOS | 17.2 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [eMudhra Limited](https://appshunter.io/developer/631328499) |

## 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 |


### eMudhra SecurePass

[App page](https://appshunter.io/ios/app/emudhra-securepass/id6788672949)

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

**In-app purchases:** none


## Frequently asked questions

### Is Frequency Analyzer free?

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

### Is eMudhra SecurePass free?

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

### Do Frequency Analyzer or eMudhra SecurePass have ads?

Neither Frequency Analyzer nor eMudhra SecurePass shows ads.

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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.*