# Illuminance Meter vs LUX Meter

The clearest difference is in-app purchases: LUX Meter at none against Illuminance Meter's 3. LUX Meter also leads on update cadence (every 3 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Illuminance Meter sells 3 in-app purchases, starting at $3.99 per 7 days. LUX Meter asks for nothing beyond the download.

Illuminance Meter ships an update every 3 months, LUX Meter every 3 days. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Illuminance Meter | LUX Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (12 ratings)](https://appshunter.io/ios/app/lux-meter-light-meter/id6783321327/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 13 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) | [Yannick Binay](https://appshunter.io/developer/6783321329) |

## What reviewers say

### Illuminance Meter

[App page](https://appshunter.io/ios/app/illuminance-meter-lux-ppfd/id6759972986)

Transform your iPhone into a professional light meter to measure illuminance in lux or foot-candles. Ideal for photographers, plant enthusiasts, and workplace safety, it provides instant, accurate light readings with various specialized modes and data export options.

**Highlights:** Real-time lux measurement with live gauge, Photography mode for exposure value (EV) calculation, Plant light mode with recommendations, Workplace standards verification, Measurement history with export options, Spectrum analysis for color temperature and CRI, Multiple illuminance unit switching

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly Plan | $3.99 | per 7 days |
| Premium Yearly | $19.99 | per year |
| Lifetime | $39.99 | one-time |


### LUX Meter

[App page](https://appshunter.io/ios/app/lux-meter-light-meter/id6783321327)

This app measures ambient light levels in lux or foot-candles using your iPhone camera. It provides instant feedback on whether a space is too dim, comfortable, or bright enough for various tasks and offers calibration options.

**Highlights:** Lux and foot-candle readings, Lighting target presets, Live brightness scale, Hold mode for measurements, Session min, average, and max, Calibration against trusted value, Private on-device metering

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

**In-app purchases:** none


## Frequently asked questions

### Is Illuminance Meter free?

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

### Is LUX Meter free?

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

### Do Illuminance Meter or LUX Meter have ads?

Neither Illuminance Meter nor LUX Meter shows ads.

### Which is updated more often, Illuminance Meter or LUX Meter?

Illuminance Meter ships an update every 3 months, and LUX Meter every 3 days. Most recently, Illuminance Meter was updated on November 7, 2026 and LUX Meter on November 5, 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.*