# Lux Light Meter

> Lux Light Meter is a simple tool for measuring illuminance intensity (lux, fc).

Canonical page: [https://chrome-stats.com/d/de.waldau\_webdesign.lightmeter](https://chrome-stats.com/d/de.waldau_webdesign.lightmeter)

## Overview

- **ID:** `de.waldau_webdesign.lightmeter`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Waldau Webdesign
- **Category:** TOOLS
- **Downloads:** 147,721
- **Rating:** 4.42 / 5 (1,992 ratings)
- **Version:** 2023.11.11
- **Last updated:** 2025-07-21
- **First published:** 2018-09-01
- **Publisher country:** DE
- **Size:** 4.59 MB
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=de.waldau_webdesign.lightmeter)
- **Website:** [https://waldau-webdesign.de/datenschutz](https://waldau-webdesign.de/datenschutz)
- **Privacy policy:** [https://waldau-webdesign.de/datenschutz/](https://waldau-webdesign.de/datenschutz/)

## Description

Lux Light Meter is a straightforward Chrome extension that converts your device into a convenient light meter using the built-in light sensor. It measures illuminance in lux (lx) and foot-candles (fc), providing users with accurate readings of ambient light intensity.

Key features include choosing your preferred measurement unit, calibration via a multiplier, and real-time tracking of minimum, maximum, and average light values during measurement sessions. Additional functionalities such as pausing measurements, resetting stats, multi-language support, and the option to keep the screen on make it user-friendly. The extension is entirely free, with no in-app purchases, making it accessible to everyone seeking simple and reliable light measurement tools. Note that measurement accuracy depends on the device's hardware capabilities.

## Rankings

- #184,734 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `de.waldau_webdesign.lightmeter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users praise Lux Light Meter as a free, easy tool that delivers practical light measurements. It’s valued for plant-lighting planning and quick, relative assessments, with lux/foot-candle readouts and mean/median values at a glance. However, reviews note recurring issues: intrusive ads (often fullscreen at startup) and compatibility problems on devices lacking a light sensor. It isn’t reliable for absolute measurements but remains useful for relative comparisons and calibration where hardware supports it.

### Pros

- Free to use.
- Simple and easy to use.
- Provides practical light metrics at a glance (lux and foot candles, mean/median).
- Useful for plant-lighting calibration and adjusting lamp height.
- Good for relative measurements without needing external instruments.

### Cons

- Intrusive ads, including full-screen startup ads.
- Not working on some devices or on devices without a light sensor.
- Not reliable for absolute measurements; mainly suitable for relative comparisons.

## Similar extensions and apps

- [Lux Light Meter](https://chrome-stats.com/d/de.waldau_webdesign.app.luxmeter) — 691,988 users, 3.91 / 5
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Source: [Chrome-Stats](https://chrome-stats.com/d/de.waldau_webdesign.lightmeter)