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The Best tool for communication about light and color!

Spectrum Genius Essence (SGE) provides you friendly UI and rich information critical to everyone concerns about light and color.You can measure and get almost all photometry :
Spectrum, CCT, CRI, CQS, Illuminance(lux), Foot Candle, λp, CIEx , CIEy, CIEu’, CIEv’, C78.377-2008, IEC-SDCM, and so on.

With Spectrum Genius Essence (SGE) and Lighting Passport Essence, you become an expert about lighting and color. No more obstacle communicating with supplier, colleague, client, designer ,film maker and photographer.

Now Support:
iPhone4S and later version
iPad mini and later version
The new iPad and later version
iPod touch 5 and later version

Suggest you update iOS to the latest one for best user experience.

What’s New

Version 4.0.1

Fix calculated method

Ratings and Reviews

3.0 out of 5
3 Ratings

3 Ratings

mrgddff ,

Lighting Navigator

Great app for collecting data on different lighting parameters and with the Lighting Navigator it can be used for several scientific applications!

Gentle Explorer ,

STOP! You don't want this app.

This requires a purchased hardware device. It does not work from your camera. It is a useless app unless you have purchased their hardware. You don't want it.

App Privacy

The developer, Asensetek Canada inc., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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