# LightSpectrum Pro

> Measure light color temperature and spectrum using your device's camera. (iPhone/iPad app by AM PowerSoftware.)

- Source: https://appshunter.io/ios/app/lightspectrum-pro/id468368751 (this page in markdown: same URL + `.md`)
- Developer: [AM PowerSoftware](https://appshunter.io/developer/303958914)
- Category: Utilities, Photo & Video
- Price: $1.99
- Rating: 4.10/5 from 39 App Store ratings · 172 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 88 MB
- Languages: American English
- Released: 2011-10-03
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lightspectrum-pro/id468368751/reviews.md

## What is LightSpectrum Pro?

With LightSpectrumPro EVO you can measure the color temperature of a light source without having to spend hundreds of dollars on professional devices. LightSpectrumPro EVO has an error of 2 - 8% compared to existing professional products on the market. in addition to the color temperature measurement in Kelvin, LightSpectrumPro EVO allows you to view the color spectrum of the light being examined with a band ranging from 360nm to 800nm. in addition to the spectrum it is possible to display the position of the white point on the CIE 1931 diagram and to apply a filter for wavelengths to display in overlay on the image captured by the cameras which elements reflect a specific frequency and with what intensity.

## Key features

- Color temperature measurement
- Color spectrum analysis (360nm-800nm)
- CIE 1931 white point display
- Wavelength filtering and overlay
- High accuracy compared to professional devices

## What do users think of LightSpectrum Pro?

Overall sentiment: mixed

**Pros**

- 📸 Accurate white balance measurement for photography
- 💡 Innovative spectrum analysis without expensive equipment
- 💰 Affordable alternative to $1,600+ professional color meters
- 📊 Detailed spectral graph visualization
- 🎯 Useful for photographers, videographers, and lighting professionals
- ⚡ Works well when used correctly with proper technique
- 🔍 Sensitive and responsive to light source changes
- 📱 No additional in-app purchases required

**Cons**

- 🐛 Frequent crashes and freezing issues
- 📱 Incompatible with many iPhone models (iPhone 5, 5S, 6, 6+, 11, X)
- ❌ Camera access problems on multiple devices
- 🎨 Inaccurate readings for certain light types (LEDs, low color temps)
- 🖥️ Poor UI scaling on larger screens (iPhone 6+, iPad)
- 📝 Numerous spelling and grammar errors in interface
- 🔧 Steep learning curve with unclear instructions
- ⚙️ Inconsistent and unreliable measurements
- 🚫 Non-responsive buttons and interface elements
- 🌡️ Struggles with color temperatures below 2700K

**Commonly reported bugs**

- App crashes on startup or during use
- Camera feed not accessible or showing red X icon
- Screen blinking/flashing on first launch
- UI elements cut off on larger screens
- Buttons unresponsive or sticky
- App freezes and cannot be exited
- Black screen on launch
- Inconsistent readings that change rapidly
- App stuck on opening screen
- Camera focus issues on iPhone X and newer models
- Incompatibility with iOS 5, 6, and newer iPhone models

**Most requested features**

- Spot metering with crosshairs or target reticle
- Direct DUV (Delta uv) display calculation
- Flicker detection for light sources
- Calibration function for improved accuracy
- Support for fluorescent light preset adjustments
- Tap-to-focus camera control
- Landscape orientation support
- Ability to disable tutorial tips
- Screenshot capability in landscape mode
- Better documentation and user guide
- Device compatibility information in app store listing

## Recent user reviews (10 of 172)

All indexed reviews: https://appshunter.io/ios/app/lightspectrum-pro/id468368751/reviews.md

### 5/5 — White Balance Good

*2026-02-13*

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.

### 2/5 — tolles spielzeug

*2025-03-27*

aber auch nicht mehr. warum sollte diese app mehr können, als die normale ios kamera app? ein weißabgleich kann nicht zu vollständig automatisiert werden, weil es darauf ankommt, was der fotograf ausdrücken will oder um welchen bildbereich es geht.

### 5/5 — Great Spectrum Tool

*2025-01-18*

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.

### 5/5 — Optical Camera Analysis for FREE

*2025-01-09*

I read the other reviews and noticed poor reviews reflected their phone or camera or lens condition, or user error because it works excellent on my ipad pro!  absolute accuracy varies with phone model, camera quality, and by how many times you've dropped or bumped or overheated your phone. roughly estimating, for every 1 meter drop and impact, your phone takes about $100 damage to camera and internal connections. if your phone reports its too hot when its not that hot around it, you've probably smacked it good at some point. it can be repaired by microscope technician but apple doesn't do that, they just exchange phone with a huge exchange price.

### 5/5 — Fantastic

*2024-11-06, version 4.3.1*

Worked well from install but took the time to calibrate by making the spectrograph and now obtain very similar results to others’ Opple-gotten measurements, both for CCT and duv. Very consistent readings too.

I don’t know if it’s possible currently but it would be great to have the app show duv directly to save me calculating it.

Overall very happy with the app, thank you.

### 5/5 — Отличное приложение!

*2024-10-23*

Лучшее приложение, если хотите выбрать правильную лампочку без синего пика и не портить себе зрение. 
А вообще, возможности приложения очень широкие. Покупайте смело, стоит копейки, а пользы целое море.

### 3/5 — Pretty good overall

*2024-04-08*

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.

### 4/5 — Super app changez le logo svp 🙏

*2023-10-21*

L’app est génial mais svp changez le logo pour quelque chose de plus pratique comme une roue de couleur ou un simple dégradé froid vers chaud parce que en l’état ce n’est pas pratique pour le retrouver dans les autres applications 🙏🙏🙏 je met directement 5 étoiles si au moins on peux avoir le choix du logo 😁

### 5/5 — ブルーライト対策に

*2023-02-19*

安眠を目的として、部屋の照明のブルーライト対策に導入した。白色には青色成分が多く、オレンジ色には青色成分が少ない事が、このアプリで実感できた。

### 2/5 — Valide confusing

*2023-01-13*

Tried the app with several leds. Some of them flickering. Here the kelvin values are useless, all about 5000. Without flicker some values are plausible, others not. I don‘t understand the spectrum view, not plausible to me. Recalled the buy.

## Frequently asked questions about LightSpectrum Pro

### What does LightSpectrum Pro do?

LightSpectrum Pro allows you to measure the color temperature of a light source and view its color spectrum using your device's camera. It provides an analysis of the white point on the CIE 1931 diagram and can overlay filtered wavelengths on captured images.

### How accurate is LightSpectrum Pro?

The app boasts an error rate of 2-8% when compared to existing professional measurement devices on the market, offering a cost-effective alternative for accurate readings.

### What is the range of the color spectrum measured?

LightSpectrum Pro can display the color spectrum of the examined light source with a band ranging from 360nm to 800nm, covering the visible light spectrum.

### Can I use this app for photography or lighting design?

Yes, the app's ability to measure color temperature, analyze spectrum, and display the white point makes it useful for photographers and lighting designers who need to understand and control light quality.

### Is LightSpectrum Pro free to use?

Based on the provided information, the application is available for free and does not appear to have in-app purchases or advertisements.

## Version history (last 5 releases)

### 4.4.0 — 2026-06-14

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.

### 4.3.1 — 2023-02-12

Added compatibility with new devices and operating system
Added reading of RGB values for white point
Added user manual
Improved stability
Fixed minor bugs

### 4.3.0 — 2021-07-31

Added the spectrographic analysis mode with the use of the refraction box
fixed minor bugs

### 4.2.1 — 2020-12-03

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

### 4.2.0 — 2020-10-18

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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All apps by AM PowerSoftware: https://appshunter.io/developer/303958914

## Related topics

[lsp evo](https://appshunter.io/ios/topics/lsp-evo) · [spectrum analyzer light](https://appshunter.io/ios/topics/spectrum-analyzer-light) · [color temperature](https://appshunter.io/ios/topics/color-temperature) · [lsp](https://appshunter.io/ios/topics/lsp) · [color temperature light](https://appshunter.io/ios/topics/color-temperature-light)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*