Seize the light

Introducing Lumu Power

The light, exposure, flash and color temperature meter for iPhone.


One device. Power of many.

Pre-Order for 229$
Using the iPhone

Join a worldwide community of Lumunauts

Photographers, film makers, architects, engineers

Weekly featuring our awesome users on Lumu blog

Different perspectives of light, same tool to measure it.

One iOs App. Simple and intuitive.

Color temperature

Green and magenta compensation. Measure chromaticity as well.


See measurements in lux or fc.

Flash Exposure

See the flash output curve. Effective flash duration time. Flash vs. ambi ratio.

Spot metering

Uses iPhone's built in camera.