# Decibel Meter Plus Pro vs Lux Light Meter

The clearest difference is review sentiment: Lux Light Meter at 100% against Decibel Meter Plus Pro's 53%. Lux Light Meter also leads on price (Free vs $2.99) and rating (5.0 vs 3.7). Decibel Meter Plus Pro's advantage is ratings volume (81 vs 5) and iOS requirement (15.0 vs 17). On ads, in-app purchases and device support there is nothing between them.

Lux Light Meter is free to download; Decibel Meter Plus Pro costs $2.99 up front. Decibel Meter Plus Pro sells 1 one-off in-app purchase and Lux Light Meter sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Lux Light Meter holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Decibel Meter Plus Pro has 81 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 53% of Decibel Meter Plus Pro's written reviews are positive against 100% of Lux Light Meter's.

Decibel Meter Plus Pro ships an update every 2 months, Lux Light Meter fortnightly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus Pro | Lux Light Meter |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [3.7 (81 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-pro/id645214476/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/lux-light-meter-illuminance/id6790679680/reviews)** |
| Number of ratings | **81** | 5 |
| Positive reviews | 52.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 12 MB | 4 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [灿耿 陈](https://appshunter.io/developer/1688324562) |

## 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 | $4.99 | one-time |


### Lux Light Meter

[App page](https://appshunter.io/ios/app/lux-light-meter-illuminance/id6790679680)

Measure ambient light levels with your iPhone. Get real-time lux and foot-candle readings, with specialized modes for photography and plant care. Track light history and calibrate for accuracy.

**Highlights:** Ambient light metering (lux/fc), Photography exposure suggestions, Plant light (PPFD/DLI) estimation, Continuous measurement and history, Optional meter calibration, Privacy-friendly local storage

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access | $1.99 | per 7 days |
| Annual Subscription | $7.99 | per year |
| Lifetime Access | $12.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus Pro free?

Decibel Meter Plus Pro costs $2.99, and also offers in-app purchases.

### Is Lux Light Meter free?

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

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

Lux Light Meter is rated higher. Decibel Meter Plus Pro averages 3.7 out of 5 from 81 ratings, while Lux Light Meter averages 5.0 from 5 ratings.

### Do Decibel Meter Plus Pro or Lux Light Meter have ads?

Neither Decibel Meter Plus Pro nor Lux Light Meter shows ads.

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

Decibel Meter Plus Pro ships an update every 2 months, and Lux Light Meter fortnightly. Most recently, Decibel Meter Plus Pro was updated on October 29, 2026 and Lux Light Meter on October 31, 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.*