# Decibel Meter vs MapMiro2

The clearest difference is iOS requirement: Decibel Meter at 13.0 against MapMiro2's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Decibel Meter sells 2 in-app purchases, starting at $4.99 per month and MapMiro2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Decibel Meter ships an update every 3 weeks, MapMiro2 fortnightly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Decibel Meter | MapMiro2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (10 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id6482288270/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 32 MB | 46 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bustgrow Ltd](https://appshunter.io/developer/1729557461) | [博洋 陈](https://appshunter.io/developer/1892561583) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id6482288270)

Measure and understand ambient noise levels with this intuitive tool. It provides instant decibel readings, logs historical data with notes, and offers visual and auditory representations of sound. Ideal for ensuring safety, monitoring environments, or protecting hearing.

**Highlights:** Instant dB readings, Historical data logging, Add personal notes to recordings, Simple and intuitive interface, Real-time audio analysis, Visual and auditory sound representation

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Access | $4.99 | per month |
| Premium Access | $39.99 | per year |


### MapMiro2

[App page](https://appshunter.io/ios/app/mapmiro2/id6762030026)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MapMiro2 Pro | $2.99 | one-time |


## Frequently asked questions

### Is Decibel Meter free?

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

### Is MapMiro2 free?

MapMiro2 is free to download, with in-app purchases available.

### Do Decibel Meter or MapMiro2 have ads?

Neither Decibel Meter nor MapMiro2 shows ads.

### Which is updated more often, Decibel Meter or MapMiro2?

Decibel Meter ships an update every 3 weeks, and MapMiro2 fortnightly. Most recently, Decibel Meter was updated on October 24, 2026 and MapMiro2 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.*