# Decibel Meter vs Control System Calc

The clearest difference is ads: Decibel Meter at none against Control System Calc's shown. Decibel Meter also leads on iOS requirement (12.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Decibel Meter | Control System Calc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-db-meter/id6749337662/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | — | Every 5 weeks |
| Monetization | Free | — |
| Size | 28 MB | 10 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ergodic Technologies Bilisim Limited Sirketi](https://appshunter.io/developer/1680504065) | [洋 刘](https://appshunter.io/developer/6775317751) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-db-meter/id6749337662)

Measure sound and noise levels accurately with real-time dB volume readings. This tool uses your device's microphone to display sound pressure levels and offers calibration for improved precision. Monitor environments to ensure they meet recommended noise limits.

**Highlights:** Real-time sound level readings, A, C, and Z weighting support, Live sound pressure level graphs, Save and review past results, Record and share audio with dB data, Device calibration for accuracy

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

**In-app purchases:** none


### Control System Calc

[App page](https://appshunter.io/ios/app/control-system-calc/id6791956580)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter free?

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

### Is Control System Calc free?

Control System Calc is free to download, with no in-app purchases.

### Do Decibel Meter or Control System Calc have ads?

Control System Calc shows ads; Decibel Meter does not.

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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.*