Lumalux Meter Light Meter

Understand the light around you with LumaLux Meter, a practical light meter
powered by the ambient-light sensor in your Android device.

CLEAR LIVE READINGS

View ambient light in Lux or foot-candles. A large digital value, an analog arc,
and plain-language lighting categories help you recognize dim, comfortable,
focused, very bright, and outdoor conditions at a glance.

SESSION STATISTICS AND CHARTS

Start, pause, or reset a measurement whenever you need. LumaLux Meter tracks
minimum, maximum, average, elapsed time, and a live chart of changing light.
Save useful sessions for later comparison.

PRIVATE ON-DEVICE HISTORY

Saved sessions stay on your device with no account. Review compact charts and
statistics, share a text summary through Android, or delete data you no longer
need.

FLEXIBLE CALIBRATION

Sensor behavior varies between phones. Adjust the calibration factor from −50%
to +50% against a trusted reference meter, then select a meter limit that fits
your environment.

PRACTICAL LIGHTING GUIDE

Compare readings with common ranges for relaxing spaces, work areas, reading,
precision tasks, and outdoor light. These ranges are general guidance, not a
safety standard or a replacement for a calibrated professional lux meter.

KEY FEATURES

• Live ambient-light sensor readings
• Lux and foot-candle units
• Analog and digital meter views
• Minimum, maximum, and average statistics
• Session chart and private on-device history
• Sensor calibration and adjustable meter limit
• Save, share, and delete sessions
• Clearly labeled demo mode for devices without a sensor
• No account or location access required

Live measurement requires an Android device with a TYPE_LIGHT sensor. If the
sensor is unavailable, the app clearly explains the limitation and offers a
labeled demo mode that is never presented as real sensor data.