# Light Meter・Lux Meter vs Illuminance Meter

The clearest difference is ads: Illuminance Meter at none against Light Meter・Lux Meter's shown. Light Meter・Lux Meter's advantage is update cadence (monthly vs every 3 months) and device support (3 vs 1). On price, review sentiment, in-app purchases and monetization model there is nothing between them.

Both are free to download. Light Meter・Lux Meter sells 2 in-app purchases, starting at $7.99 per 7 days and Illuminance Meter sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Light Meter・Lux Meter ships an update monthly, Illuminance Meter every 3 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Light Meter・Lux Meter | Illuminance Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/light-meterlux-meter/id6759604310/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 113 MB | 13 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ZeroPlay Ltd.](https://appshunter.io/developer/1500119722) | [LEAN ASIA CO., LTD](https://appshunter.io/developer/1815050814) |

## What reviewers say

### Light Meter・Lux Meter

[App page](https://appshunter.io/ios/app/light-meterlux-meter/id6759604310)

This utility app transforms your smartphone into a professional light measurement tool, offering precise real-time readings in lux, foot-candle, and EV. It helps users meet lighting standards for various environments and optimize conditions for plant growth, with features for tracking changes over time.

**Highlights:** Real-time lux, foot-candle, and EV readings, Visual brightness indicator, Check lighting standards for spaces, Calculate DLI and PPFD for plants, Continuous recording and trend charts, Save and compare measurements

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Monthly | $19.99 | per month |


### 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 |


## Frequently asked questions

### Is Light Meter・Lux Meter free?

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

### Is Illuminance Meter free?

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

### Do Light Meter・Lux Meter or Illuminance Meter have ads?

Light Meter・Lux Meter shows ads; Illuminance Meter does not.

### Which is updated more often, Light Meter・Lux Meter or Illuminance Meter?

Light Meter・Lux Meter ships an update monthly, and Illuminance Meter every 3 months. Most recently, Light Meter・Lux Meter was updated on November 4, 2026 and Illuminance 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.*