# NoiseLedger vs Frequency Analyzer

The clearest difference is in-app purchases: NoiseLedger at none against Frequency Analyzer's 2. NoiseLedger also leads on iOS requirement (15.0 vs 17.6). Frequency Analyzer's advantage is update cadence (fortnightly vs every 5 months). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for NoiseLedger against 5.0 for Frequency Analyzer. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

NoiseLedger ships an update every 5 months, Frequency Analyzer fortnightly. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | NoiseLedger | Frequency Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/noiseledger-decibel-meter/id6450401003/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/frequency-analyzer-db-meter/id6770267924/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Size | 27 MB | 9 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [lapnito.cz s.r.o.](https://appshunter.io/developer/1577358577) | [Ertugrul Sari](https://appshunter.io/developer/1802366246) |

## What reviewers say

### NoiseLedger

[App page](https://appshunter.io/ios/app/noiseledger-decibel-meter/id6450401003)

Measure sound levels with real-time decibel readings and detailed noise logging. Analyze audio with frequency weighting, spectrograms, and create professional reports. This privacy-focused tool keeps all data on your device.

**Highlights:** Real-time dB measurement, Frequency weighting (A, C, Z), Noise dosimeter standards (NIOSH, OSHA), FFT spectrum and spectrogram, Professional PDF, CSV, PNG reports, Overnight and long-session recording, Session history and trends dashboard

**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 NoiseLedger free?

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

### Is Frequency Analyzer free?

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

### Which has better reviews, NoiseLedger or Frequency Analyzer?

NoiseLedger and Frequency Analyzer are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do NoiseLedger or Frequency Analyzer have ads?

Neither NoiseLedger nor Frequency Analyzer shows ads.

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

NoiseLedger ships an update every 5 months, and Frequency Analyzer fortnightly. Most recently, NoiseLedger was updated on October 25, 2026 and Frequency Analyzer on October 28, 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.*