# Sound Meter vs NOA EV

The clearest difference is in-app purchases: NOA EV at none against Sound Meter's 1. NOA EV also leads on ads (none vs shown) and iOS requirement (14.0 vs 17.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Sound Meter sells 1 one-off in-app purchase. NOA EV asks for nothing beyond the download.

Sound Meter ships an update every 2 weeks, NOA EV fortnightly. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sound Meter | NOA EV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (16 ratings)](https://appshunter.io/ios/app/sound-meter/id1560541986/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 84 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hiep Pham](https://appshunter.io/developer/1040792388) | [D-LIGHT Group](https://appshunter.io/developer/1537442142) |

## What reviewers say

### Sound Meter

[App page](https://appshunter.io/ios/app/sound-meter/id1560541986)

This utility app measures ambient noise levels in decibels. It provides a reference table to help users understand safe listening levels and protects their hearing. The app also stores historical measurements for later review.

**Highlights:** Measures sound level in decibels, Decibel level reference table, Hearing protection guidance, Stores measurement history, Easy to use interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $4.99 | one-time |


### NOA EV

[App page](https://appshunter.io/ios/app/noa-ev/id6755315624)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sound Meter free?

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

### Is NOA EV free?

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

### Do Sound Meter or NOA EV have ads?

Sound Meter shows ads; NOA EV does not.

### Which is updated more often, Sound Meter or NOA EV?

Sound Meter ships an update every 2 weeks, and NOA EV fortnightly. Most recently, Sound Meter was updated on October 30, 2026 and NOA EV 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.*