# RevMeter Pro vs DDNScoil

The clearest difference is price: DDNScoil at Free against RevMeter Pro's $6.99. DDNScoil also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.6). RevMeter Pro's advantage is ads (none vs shown). On in-app purchases there is nothing between them.

DDNScoil is free to download; RevMeter Pro costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | RevMeter Pro | DDNScoil |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[2.2 (5 ratings)](https://appshunter.io/ios/app/revmeter-pro/id357421594/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 26.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 7 MB | 28 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Schorer](https://appshunter.io/developer/290579382) | [Roman Ostrovsky](https://appshunter.io/developer/1775424239) |

## What reviewers say

### RevMeter Pro

[App page](https://appshunter.io/ios/app/revmeter-pro/id357421594)

This app measures the reverberation time (RT60) of any room using your iPhone. It offers dual measurement modes and calculates RT60 based on RT20 and RT30 decay slopes. Easily export data and visualize acoustic analysis.

**Highlights:** Measures reverberation time (RT60), Dual measurement modes (Impulse, Interrupted Noise), Calculates RT60 using RT20/RT30 standards, Data export (CSV, Screenshots), Visual decay curves and spectrograms

**In-app purchases:** none


### DDNScoil

[App page](https://appshunter.io/ios/app/ddnscoil/id6747803541)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RevMeter Pro free?

RevMeter Pro costs $6.99, with no in-app purchases.

### Is DDNScoil free?

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

### Do RevMeter Pro or DDNScoil have ads?

DDNScoil shows ads; RevMeter Pro 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.*