Quick verdict
- What it is
- Store information collected; independent summary not yet available.
- At a glance
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- $1.99
Categories and search queries
Official categories
- Utilities
- Photo & Video
AppCorpus categories
Key functions
| Function | Availability | Access | Scope | Evidence |
|---|---|---|---|---|
| Family Sharing | Yes | Unknown | App Store | Store published |
Screens
App Store
11 store screenshots
Pricing & paywalls
App Store
- Price: $1.99
Ratings & reviews
App Store
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5/5Super cool!
First, the fact that it does what normally takes thousands of dollars in tools is fantastic. No, it's probably not nearly as accurate as pro devices to do this work and having said that, since I don't have access to pro-grade tools I cannot say how the accuracy of this compares. But now I have a way to quantify the various values of light sources, and most helpfully, I can compare them objectively. This is certainly an app that every art, theatre lighting and photography student should own. Such a good learning tool to see how light sources and color interact. For homeowners this tool helps sort through the spec's of the multitude of light bulbs at the big box stores. I'm using this on an iPhone 6s with no problems. My only complaints: -The interface can get cluttered. Using it in landscape mode helps that quite a bit. In portrait mode, at least on my little phone, things get piled on each other. Wish it would run on my older iPad! -The helpful explanatory tips are good, but I wish I could figure out how to shut them off. -I wish I could take screen shots in landscape view. Wish: -Now if it had a way to measure flicker of bulbs! Don't care, make it a separate app or make it a purchasable upgrade for this one. I'd buy it!
nickname92829 · 31 Jul 2026
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5/5Quite accurate!
I used to use a $2,000 light meter to measure color temperature when I worked in the film industry. This meter costs only a few bucks and is almost as good. The app description says it’s within 8% of the actual color temperature, which in most circumstances is sufficient. I tested the app in a variety of environments; I.e. outdoor sunny, outdoor cloudy, interior lights, balanced to daylight, cool white, etc. and it worked great. If you’re doing scientific measurements it might not be what you need but for film and video it’s pretty great.
QuarkUnit · 31 Jul 2026
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5/5Great Spectrum Tool
Just got this app and held it under our Halogen and LED lights and our LED grow-light. This app is sensitive: the grow light has rows of different color LED and as I moved my iPhone the data changed with small moves. I think it will work great. And I love that there are no (that I’ve discovered) additional in-app purchases like so many apps have nowadays.
SanFranFotoShootr · 31 Jul 2026
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5/5White Balance Good
For photography white balance, I aim this at my light source, take a kelvin reading, enter it into my camera and viola!, perfect white balance, no need for cards nor discs…I photograph models and get them into magazines.
YesterdayKnows · 31 Jul 2026
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3/5Pretty good overall
I have some LEDs where I know the wavelengths, and under some combination lighting conditions the app is super inaccurate—but under lots of conditions (including combination ones) it’s very accurate. Useful tool, overall. I wish they would fix the inaccuracies but I’m still glad I have this app; there’s no other app that has a full spectrogram right now.
M22222299999 · 31 Jul 2026
Privacy & accessibility
App Store
Privacy
- Data Not Collected Developer declared
Accessibility
No accessibility labels collected yet.
Versions
App Store
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3.0.2
- Improved graphic interface, detailed graphical representation of the light spectrum, placing the value of the infrared scale on the right side at the 800 nm - Improved calculation of the wavelength of the light spectrum with a significant improvement in the discrimination of frequencies and greater precision in the graphical representation - Increased bandwidth of the spectrum up to the limits allowed by the camera's sensor. Minimum Maximum 320nm 810nm - Fixed some bugs found on iPhone6 Plus and iPad Pro 12 " - Fixed minor bugs
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3.0.3
-were Fixed some bugs that caused the crash at app startup -Improved Performance even on older devices. -Fixed Minor bugs
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3.0.4
- Fixed a bug that caused the app to crash on iPhone5 and iPhone5s - Fixed minor bugs
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3.0.5
Fixed some bugs that caused the app to crash on iOS10
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3.0.6
Improved graph generation of wavelengths, with the addition of the logarithmic scale Improved stability Fixed minor bugs
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3.0.7
Improved Stability Fixed the problem of access to the camera on some devices Fixed minor bugs added the button to the technical support by sending diagnostic data
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3.0.8
Fixed a problem that caused a bad app resolution on the 4.7 and 5.5 inc displays Solved minor bugs
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3.0.9
Fixed a bug that caused resolution problems on some IPhone7 and iPad models Improved graphical interface Solved minor bugs
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3.1.0
Added a new feature that allows the wavelength scan of the image captured by the camera Introduced compatibility with new iPad and iPad Pro Improved stability Solved minor bugs
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3.2.0
Added support for the new iDevices correct minor bugs
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4.0.0
The new version of LightSpectrum Pro Evolution changes its look, the new interface improves the user experience, and the new color space chart panel with white point indication has been added to the new features. improved stability and resolved some bugs found on new devices. LightSpectrum Pro Evolution
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4.0.2
Stability improved Added support for new devices solved minor bugs
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4.0.3
stability improved greater compatibility with the new devices solved minor bugs
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4.0.4
stability improved improved accuracy
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4.0.5
introduced the measurement of the concentration of blue lights, indicated with the G-Index value that represents the quantity of wavelengths of the colors of light ranging from 350 to 550 nm with respect to the intensity of the complete view. The G-index, indicates the shift towards red or infrared spectrum, therefore a low value of G indicates a large percentage of blue lights, a value greater than 2 indicates that the light under examination has a low concentration of wavelengths between 350- 550 nm
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4.0.6
GUI improvements Added panel with Kelvin value indicator Fixed a bug that blocked the calculation of the color temperature value on some devices Minor bugs fixed.
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4.0.7
Added page to send support request Improved algorithm for calculating light intensity Fixed minor bugs
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4.0.8
Stability improved Accuracy improved Horizontal view added Fixed minor bugs
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4.0.9
Fixed a critical bug that cause app crash if started in landscape orientation, Fixed a minor bug
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4.1.0
Added support for new devices Improved stability with new iOS versions Minor bugs fixed
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4.2.0
Improved the user interface Added the Hue graph that indicates the complementary value of the color temperature, with a value of -100 for tending to magenta and +100 for tending to green Improved the wavelength spectrum graph Improved the algorithm for calculating the white point X and Y coordinates in the CIE1931 diagram Minor bugs fixed
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4.2.1
Added a new function that allows you to estimate the value of PAR (Photosynthetic Active Radiation) emitted by the light source. The value is expressed in PPFD (Photosynthetic Photonic Flux Density) in umol/m2/s, which consists of the quantity of PAR that reach the surface of the plant per second. Fixed some UI bugs Added compatibility with new devices Minor bugs fixed
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4.3.0
Added the spectrographic analysis mode with the use of the refraction box fixed minor bugs
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4.3.1
Added compatibility with new devices and operating system Added reading of RGB values for white point Added user manual Improved stability Fixed minor bugs
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4.4.0
· 14 Jun 2026
This update brings support for all the latest iPhone models, introduces automatic light source recognition for a smarter analysis experience, improves overall performance and stability, and includes several minor bug fixes to ensure smoother operation.
Availability by market
- US
Data quality & evidence
- Page completeness
- Live store listing
- Last verified
- 31 Jul 2026
- Sources
- App Store
- Independent summary has not been published yet.