# Decibels vs MisesApp

The clearest difference is in-app purchases: MisesApp at none against Decibels's 1. MisesApp also leads on update cadence (every 11 days vs every 30 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Decibels sells 1 in-app purchase, starting at $3.99 per month. MisesApp asks for nothing beyond the download.

Decibels ships an update every 30 months, MisesApp every 11 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Decibels | MisesApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (22 ratings)](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 34 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Real Vision Ltd](https://appshunter.io/developer/1447773149) | [MISES Capital LTDA](https://appshunter.io/developer/6780562816) |

## What reviewers say

### Decibels

[App page](https://appshunter.io/ios/app/decibels-sound-level-db-meter/id1590741461)

Measure sound levels in decibels using your device's microphone. View real-time graphs and historical data to detect noise pollution and protect your hearing. Calibrate for accurate readings across various environments.

**Highlights:** Measures sound in decibels (dB), Displays sound samples on a graph, Detects loud and low environmental noise, Calibrated for accuracy, Shows min/avg/max decibel values, Saves data and view history, Calibrates decibel for each device

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| dB Meter Full App Access | $3.99 | per month |


### MisesApp

[App page](https://appshunter.io/ios/app/misesapp/id6756465052)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibels free?

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

### Is MisesApp free?

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

### Do Decibels or MisesApp have ads?

Neither Decibels nor MisesApp shows ads.

### Which is updated more often, Decibels or MisesApp?

Decibels ships an update every 30 months, and MisesApp every 11 days. Most recently, Decibels was updated on November 3, 2026 and MisesApp on October 30, 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.*