# RevMeter Pro vs Audio Delay & Tempo

The clearest difference is update cadence: Audio Delay & Tempo at every 5 days against RevMeter Pro's every 4 months. Audio Delay & Tempo also leads on price ($1.49 vs $6.99) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

RevMeter Pro costs $6.99 and Audio Delay & Tempo $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.

RevMeter Pro ships an update every 4 months, Audio Delay & Tempo every 5 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RevMeter Pro | Audio Delay & Tempo |
| --- | --- | --- |
| Price | $6.99 | **$1.49** |
| 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 | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 7 MB | 3 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Matthias Schorer](https://appshunter.io/developer/290579382) | [Paran](https://appshunter.io/developer/1698510581) |

## 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


### Audio Delay & Tempo

[App page](https://appshunter.io/ios/app/audio-delay-and-tempo/id6795453191)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is RevMeter Pro free?

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

### Is Audio Delay & Tempo free?

Audio Delay & Tempo costs $1.49, with no in-app purchases.

### Do RevMeter Pro or Audio Delay & Tempo have ads?

Neither RevMeter Pro nor Audio Delay & Tempo shows ads.

### Which is updated more often, RevMeter Pro or Audio Delay & Tempo?

RevMeter Pro ships an update every 4 months, and Audio Delay & Tempo every 5 days. Most recently, RevMeter Pro was updated on November 1, 2026 and Audio Delay & Tempo on October 24, 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.*