# Lenze & Friedmann vs Frequency Analyzer

The clearest difference is in-app purchases: Lenze & Friedmann at none against Frequency Analyzer's 2. Lenze & Friedmann also leads on iOS requirement (15.6 vs 17.6). Frequency Analyzer's advantage is update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. Frequency Analyzer sells 2 in-app purchases, starting at $4.99 per 7 days. Lenze & Friedmann asks for nothing beyond the download.

Lenze & Friedmann ships an update every 2 months, Frequency Analyzer fortnightly. Both last shipped on October 21, 2026.

## The numbers

| Metric | Lenze & Friedmann | Frequency Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/frequency-analyzer-db-meter/id6770267924/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 46 MB | 9 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Idwell GmbH](https://appshunter.io/developer/1269662593) | [Ertugrul Sari](https://appshunter.io/developer/1802366246) |

## What reviewers say

### Lenze & Friedmann

[App page](https://appshunter.io/ios/app/lenze-and-friedmann/id6444960839)

**In-app purchases:** none


### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer-db-meter/id6770267924)

Transform your device into a professional sound level meter, spectrum analyzer, and noise dosimeter. Ideal for fieldwork, inspections, and detailed acoustic measurements with real-time data and exportable reports.

**Highlights:** Real-time SPL meter with A, C, Z weighting, FFT spectrum and scrolling spectrogram, Noise dosimeter for exposure tracking, Octave-band analysis, Reference tone generator, CSV, PNG, and PDF report export

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Lifetime Access | $19.99 | one-time |


## Frequently asked questions

### Is Lenze & Friedmann free?

Lenze & Friedmann is free to download, with no in-app purchases.

### Is Frequency Analyzer free?

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

### Do Lenze & Friedmann or Frequency Analyzer have ads?

Neither Lenze & Friedmann nor Frequency Analyzer shows ads.

### Which is updated more often, Lenze & Friedmann or Frequency Analyzer?

Lenze & Friedmann ships an update every 2 months, and Frequency Analyzer fortnightly. Most recently, Lenze & Friedmann was updated on October 21, 2026 and Frequency Analyzer on October 21, 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.*