# Decibel Meter vs OSS

The clearest difference is in-app purchases: OSS at none against Decibel Meter's 2. OSS also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Decibel Meter sells 2 in-app purchases, starting at $0.99 per month. OSS asks for nothing beyond the download.

Decibel Meter ships an update every 3 weeks, OSS every 4 days. The most recent releases landed on November 2, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Decibel Meter | OSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (222 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-meter/id1373636871/reviews)** | — |
| Number of ratings | **222** | — |
| Positive reviews | 40.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 51 MB | 65 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MYSTIC MOBILE APPS LLC](https://appshunter.io/developer/1481942662) | [Fernando Daniel Velazquez Herrera](https://appshunter.io/developer/1444984462) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-meter/id1373636871)

Transform your smartphone into a precise sound measuring device. This app uses your phone's microphone to display real-time decibel levels with clear descriptions. Analyze sound over time, calibrate for accuracy, and share your findings easily.

**Highlights:** Real-time decibel measurement, Min, average, and max sound levels, Apple Watch integration, Customizable calibration, Data sharing (CSV, screenshots), Historical data tracking, Cloud data storage

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Sound Meter+ | $0.99 | per month |
| Annual Sound Meter+ | $5.99 | per year |


### OSS

[App page](https://appshunter.io/ios/app/oss/id1641990357)

**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 OSS free?

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

### Do Decibel Meter or OSS have ads?

Decibel Meter shows ads; OSS does not.

### Which is updated more often, Decibel Meter or OSS?

Decibel Meter ships an update every 3 weeks, and OSS every 4 days. Most recently, Decibel Meter was updated on November 2, 2026 and OSS on October 30, 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.*