# Decibel vs Contr'Actor

The clearest difference is in-app purchases: Contr'Actor at none against Decibel's 15. Decibel's advantage is ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. Decibel sells 15 in-app purchases, starting at $1.99 per 7 days. Contr'Actor asks for nothing beyond the download.

Decibel ships an update monthly, Contr'Actor every 5 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Decibel | Contr'Actor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (318 ratings)](https://appshunter.io/ios/app/decibel-db-noise-level-meter/id6464403884/reviews)** | — |
| Number of ratings | **318** | — |
| Positive reviews | 81.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 80 MB | 8 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 17+ | 4+ |
| Developer | [EYWIN BILGI TEKNOLOJILERI ANONIM SIRKETI](https://appshunter.io/developer/1492105189) | [Laurent Moulinier](https://appshunter.io/developer/1804669259) |

## What reviewers say

### Decibel

[App page](https://appshunter.io/ios/app/decibel-db-noise-level-meter/id6464403884)

Measure, analyze, and protect your hearing with this comprehensive sound level meter. It offers real-time decibel readings, noise exposure monitoring, and tools for audio exploration like frequency generation and speaker cleaning.

**Highlights:** Real-time sound level measurement (dB), Noise exposure monitoring (Dosimeter), Interactive recording and visualization, Frequency generator, Speaker cleaner, Frequency hearing test

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grooz DB Meter Weekly | $1.99 | per 7 days |
| Weekly Decibel Meter | $2.99 | per 7 days |
| weekly premium | $3.99 | per 7 days |
| Weekly Premium | $3.99 | per 7 days |
| Weekly PRO Decibel | $4.99 | per 7 days |
| Monthly Decibel Meter | $5.99 | per month |
| Monthly Premium | $6.99 | per month |
| Unlimited Weekly PRO | $7.99 | per 7 days |
| Monthly Decibel Sonic PRO | $12.99 | per month |
| Special Yearly Premium | $12.99 | per year |
| Annual Decibel Meter | $29.99 | per year |
| Yearly Premium (B) | $39.99 | per year |
| Yearly Premium | $39.99 | per year |
| Yearly Decibel Sonic PRO | $44.99 | per year |
| Yearly premium pro | $59.99 | per year |

**What reviewers like**

- 👍 Easy to use
- 📏 Accurate decibel meter
- 🔊 High sound level detection
- 👂 Healthy for ear
- 🏠 Useful for home noise levels

**What reviewers complain about**

- 🔋 High battery usage
- 💸 Difficult to cancel subscription
- 💳 Hidden charges after trial
- ⚠️ Dodgy subscription practices

**Reported bugs**

- Background activity drains battery
- Subscription cancellation not obvious

**Requested features**

- Clear cancellation instructions


### Contr'Actor

[App page](https://appshunter.io/ios/app/contractor/id6745491063)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel free?

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

### Is Contr'Actor free?

Contr'Actor is free to download, with no in-app purchases.

### Do Decibel or Contr'Actor have ads?

Contr'Actor shows ads; Decibel does not.

### Which is updated more often, Decibel or Contr'Actor?

Decibel ships an update monthly, and Contr'Actor every 5 weeks. Most recently, Decibel was updated on October 24, 2026 and Contr'Actor on October 20, 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.*