# Decibel Meter vs Conversion Buddy

The clearest difference is in-app purchases: Conversion Buddy at none against Decibel Meter's 4. Conversion Buddy also leads on update cadence (every 4 days vs every 9 days). Decibel Meter's advantage is ads (none vs shown) and iOS requirement (15.0 vs 18.6). On price and device support there is nothing between them.

Both are free to download. Decibel Meter sells 4 in-app purchases, starting at $2.99 per 7 days. Conversion Buddy asks for nothing beyond the download.

Decibel Meter ships an update every 9 days, Conversion Buddy every 4 days. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Decibel Meter | Conversion Buddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8 ratings)](https://appshunter.io/ios/app/decibel-meter-noise-meter-db/id6767143529/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Freemium | — |
| Size | 68 MB | 11 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SEEYAS LIMITED](https://appshunter.io/developer/1895208045) | [Thomas Portlock](https://appshunter.io/developer/1890094275) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-noise-meter-db/id6767143529)

Transform your device into a professional sound level meter to measure ambient noise in real-time. Analyze sound frequencies, monitor noise exposure, and export detailed reports to understand your acoustic environment.

**Highlights:** Real-time decibel measurement, A, C, and Z frequency weighting, FAST, SLOW, and IMPULSE response modes, Spectrum Analyzer with FFT and spectrogram, Noise Dosimeter for daily exposure estimates, Long-term tracking and history logs, Exportable PDF reports

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Discount | $2.99 | per 7 days |
| Weekly Premium | $9.99 | per 7 days |
| Monthly Premium | $9.99 | per month |
| Annual Premium | $49.99 | per year |


### Conversion Buddy

[App page](https://appshunter.io/ios/app/conversion-buddy/id6797594011)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter free?

Decibel Meter is free to download, with in-app purchases available.

### Is Conversion Buddy free?

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

### Do Decibel Meter or Conversion Buddy have ads?

Conversion Buddy shows ads; Decibel Meter does not.

### Which is updated more often, Decibel Meter or Conversion Buddy?

Decibel Meter ships an update every 9 days, and Conversion Buddy every 4 days. Most recently, Decibel Meter was updated on October 9, 2026 and Conversion Buddy on October 6, 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.*