# Decibel Meter Plus Pro vs PlateDetect

The clearest difference is price: PlateDetect at Free against Decibel Meter Plus Pro's $0.99. PlateDetect also leads on rating (5.0 vs 3.8) and in-app purchases (none vs 1). Decibel Meter Plus Pro's advantage is ratings volume (80 vs 1) and device support (3 vs 1). On ads there is nothing between them.

PlateDetect is free to download; Decibel Meter Plus Pro costs $0.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase. PlateDetect asks for nothing beyond the download.

PlateDetect holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Decibel Meter Plus Pro has 80 ratings behind it against 1, so its average is the more settled of the two.

Decibel Meter Plus Pro ships an update every 2 months, PlateDetect every 9 days. The most recent releases landed on September 21, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus Pro | PlateDetect |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.8 (80 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/platedetect/id6782638884/reviews)** |
| Number of ratings | **80** | 1 |
| Positive reviews | 52.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Paid | **Free** |
| Size | 12 MB | 10 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [Ona Pacholo Asis](https://appshunter.io/developer/1896650203) |

## What reviewers say

### Decibel Meter Plus Pro

[App page](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476)

Measure the sound levels around you with this utility app. It displays average, peak, and max values, offers decibel exposure time guidelines, and provides information on noise-induced hearing loss. The app also allows data recording and export for analysis.

**Highlights:** Measure sound levels, Display average, peak, and max values, Decibel exposure time guidelines, Information on noise-induced hearing loss, Record and export data, Calibrate measurements, Universal app support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Reports | $2.99 | one-time |


### PlateDetect

[App page](https://appshunter.io/ios/app/platedetect/id6782638884)

This app reads license plates directly on your device using your camera or imported photos. It offers features for checking plate readability from a distance, managing scan history, and setting up custom alerts for specific plates.

**Highlights:** On-device license plate reading, Live camera scan, Photo import recognition, Readability checks, History management, Watchlist alerts, Plate format configuration

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $0.99, and also offers in-app purchases.

### Is PlateDetect free?

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

### Which has better reviews, Decibel Meter Plus Pro or PlateDetect?

PlateDetect is rated higher. Decibel Meter Plus Pro averages 3.8 out of 5 from 80 ratings, while PlateDetect averages 5.0 from 1 ratings.

### Do Decibel Meter Plus Pro or PlateDetect have ads?

Neither Decibel Meter Plus Pro nor PlateDetect shows ads.

### Which is updated more often, Decibel Meter Plus Pro or PlateDetect?

Decibel Meter Plus Pro ships an update every 2 months, and PlateDetect every 9 days. Most recently, Decibel Meter Plus Pro was updated on September 21, 2026 and PlateDetect on September 22, 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.*