# Frequency Analyzer vs passwhistle

The clearest difference is in-app purchases: passwhistle at none against Frequency Analyzer's 2. passwhistle also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. Frequency Analyzer sells 2 in-app purchases, starting at $4.99 per month. passwhistle asks for nothing beyond the download.

Frequency Analyzer ships an update monthly, passwhistle every 6 weeks. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Frequency Analyzer | passwhistle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 2 MB | 40 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RAMAZAN USEN](https://appshunter.io/developer/1783434185) | [KAM INOVASYON BILISIM REKLAMCILIK A.S.](https://appshunter.io/developer/866563278) |

## What reviewers say

### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer-spectralab/id6762404295)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SpectraLab Pro Monthly | $4.99 | per month |
| SpectraLab Pro Yearly | $24.99 | per year |


### passwhistle

[App page](https://appshunter.io/ios/app/passwhistle/id6769729497)

**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 passwhistle free?

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

### Do Frequency Analyzer or passwhistle have ads?

Neither Frequency Analyzer nor passwhistle shows ads.

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

Frequency Analyzer ships an update monthly, and passwhistle every 6 weeks. Most recently, Frequency Analyzer was updated on October 16, 2026 and passwhistle on October 10, 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.*