Available on Google Play

WristLux

Wear OS•Native Kotlin + Jetpack Compose

A standalone Wear OS ambient light meter that turns your smartwatch into a glanceable lux meter for quick desk, plant, photography, or ambient light checks.

Key Features

Live ambient lux reading from the watch light sensor
Cached latest-reading watch face complication
Large, highly readable Wear OS UI optimized for round screens
Hold current reading while the live meter continues updating
Ambient light zones (dark, dim, indoor, bright indoor, overcast, daylight)
Watch-native modes for desk, reading, plants, photo, and outdoor checks
Lux and foot-candle unit toggle with calibration adjustments
Current session min, max, average, and duration tracking
First-launch guide explaining sensor placement and best measurement technique
Local-first design — no account, backend, ads, or analytics

Frequently Asked Questions

Does WristLux require a companion app on my phone?

No. WristLux is a standalone Wear OS app that runs directly on your watch using the built-in ambient light sensor.

How accurate are the light readings?

Readings can vary by watch model, wrist angle, shadows, sleeves, case obstruction, and sensor placement. WristLux is designed as a quick, handy reference and is not a certified professional light meter.

How does the watch face complication work?

The complication displays the latest valid light reading recorded by the main app using cached local data. To save battery, it does not continuously poll the sensor in the background.

Does it collect or share my data?

No. WristLux is entirely local-first. It does not collect, transmit, sell, or share personal data, and contains no ads or third-party tracking SDKs.

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