# Decibel Meter ! vs L22 Spectro

The clearest difference is in-app purchases: L22 Spectro at none against Decibel Meter !'s 4. L22 Spectro also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.6). Decibel Meter !'s advantage is update cadence (fortnightly vs monthly). On price and device support there is nothing between them.

Both are free to download. Decibel Meter ! sells 4 in-app purchases, starting at $7.99 per 7 days. L22 Spectro asks for nothing beyond the download.

Decibel Meter ! ships an update fortnightly, L22 Spectro monthly. The most recent releases landed on October 31, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Decibel Meter ! | L22 Spectro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (20 ratings)](https://appshunter.io/ios/app/decibel-meter/id6757183442/reviews)** | — |
| Number of ratings | **20** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 104 MB | 19 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pravin Gondaliya](https://appshunter.io/developer/1210259494) | [Jacek Krawczykowski](https://appshunter.io/developer/6781178387) |

## What reviewers say

### Decibel Meter !

[App page](https://appshunter.io/ios/app/decibel-meter/id6757183442)

This app measures and analyzes sound levels in real-time, providing clear decibel readings and tracking noise changes. It offers advanced features like dosimeter functions, visual graphs, and the ability to capture photos and videos with dB overlays. Save and export your sound data for comprehensive insights into your environment.

**Highlights:** Real-time decibel readings, Advanced dosimeter functions, Multiple sound graphs, Photo & video capture with dB overlay, Recording history and export, Frequency analysis

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Week Premium Access | $7.99 | per 7 days |
| 1-Month Premium Access | $14.99 | per month |
| 1-Year Premium Access | $39.99 | per year |
| Lifetime Premium Access | $69.99 | one-time |


### L22 Spectro

[App page](https://appshunter.io/ios/app/l22-spectro/id6781178385)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter ! free?

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

### Is L22 Spectro free?

L22 Spectro is free to download, with no in-app purchases.

### Do Decibel Meter ! or L22 Spectro have ads?

Decibel Meter ! shows ads; L22 Spectro does not.

### Which is updated more often, Decibel Meter ! or L22 Spectro?

Decibel Meter ! ships an update fortnightly, and L22 Spectro monthly. Most recently, Decibel Meter ! was updated on October 31, 2026 and L22 Spectro on October 14, 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.*