# Decibel Meter A+ vs Shh

The clearest difference is in-app purchases: Shh at none against Decibel Meter A+'s 3. Shh also leads on ads (none vs shown) and update cadence (every 5 days vs every 6 weeks). Decibel Meter A+'s advantage is iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Decibel Meter A+ sells 3 one-off in-app purchases. Shh asks for nothing beyond the download.

Decibel Meter A+ ships an update every 6 weeks, Shh every 5 days. The most recent releases landed on September 16, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | Decibel Meter A+ | Shh |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 89.5% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 5 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [BO YOUNG PARK](https://appshunter.io/developer/1291813217) | [Jia Jang](https://appshunter.io/developer/1750288126) |

## What reviewers say

### Decibel Meter A+

[App page](https://appshunter.io/ios/app/decibel-meter-a-plus/id6450104699)

This app measures and analyzes environmental noise in real time, providing accurate dB levels and statistical data. It features a simple interface for detecting subtle noises, with recording and sharing capabilities to manage noise data effectively and promote a safer environment.

**Highlights:** Real-time dB level monitoring, Environmental noise analysis, Noise measurement recording, Data sharing capabilities, Intuitive user interface, Statistical data generation

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Coffee for App Developers | $1.99 | one-time |
| Coffee + Cake for App Devs | $3.99 | one-time |


### Shh

[App page](https://appshunter.io/ios/app/shh/id6737796995)

This app helps you stay focused by alerting you when your noise levels exceed a set limit. It's designed for quiet environments like study areas, reducing stress about making noise. Receive discreet alerts even when the screen is locked or the app is in the background.

**Highlights:** Noise level alerts, Background operation, Lock screen alerts, Focus enhancement, Stress reduction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter A+ free?

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

### Is Shh free?

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

### Do Decibel Meter A+ or Shh have ads?

Decibel Meter A+ shows ads; Shh does not.

### Which is updated more often, Decibel Meter A+ or Shh?

Decibel Meter A+ ships an update every 6 weeks, and Shh every 5 days. Most recently, Decibel Meter A+ was updated on September 16, 2026 and Shh on June 9, 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.*