# LightSpectrum Pro — user reviews

> 172 indexed App Store user reviews of LightSpectrum Pro by AM PowerSoftware, rated 4.10/5 from 39 ratings.

- Source: https://appshunter.io/ios/app/lightspectrum-pro/id468368751/reviews
- App overview in markdown: https://appshunter.io/ios/app/lightspectrum-pro/id468368751.md
- Rating breakdown: 5★ 26 · 4★ 4 · 3★ 1 · 2★ 1 · 1★ 7

## 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

## Newest reviews (12 of 172)

### 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.

### 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 😁

### 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.

### 2/5 — 不准

*2022-07-12*

不准

### 2/5 — Needs a target on the screen to only measure that point

*2022-05-29*

This app needs to have crosshairs or circle at a point on the screen, to only take measurements. General averages of the picture isn’t a great feature. Spot metering will make this app awesome!

### 2/5 — 不准

*2021-09-14*

不准

### 4/5 — Misspellings

*2021-01-18*

Some old-fashioned people think that a quality program should have no misspellings. So think about ‘cancel’ and ‘wavelength’, please. Aren’t you embarrassed by these errors?

### 5/5 — Super cool!

*2020-12-26*

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!

### 5/5 — Color temp without external hardware!

*2020-12-13*

I was looking for an app to measure color temp without external hardware. I found this after trying several others and was very pleased.

### 5/5 — Great!

*2020-12-12, version 4.2.1*

Works great for my realestate video & photo!

### 5/5 — Wow

*2020-08-30*

This is an amazing application. You did a phenomenal job, thank you!

## Most critical reviews (10 lowest-rated)

### 1/5 — Over takes my iPhone

*2022-06-10, version 4.3.0*

Whatever the programming is doing is bad. It takes over the iPhone. I can’t even exit the program, buttons don’t response.

### 1/5 — Money Back please

*2021-12-05, version 4.3.0*

This app does not work, gives sane reading what ever the light source !
You should not be charging for an ad pp that doesn’t work..
Rip off…..

### 1/5 — 关灯3000多k 不好用

*2021-10-19*

啊

### 1/5 — Overcharged

*2021-04-06, version 4.2.1*

I was overcharged the amount of $18.38 when I purchased this app. I need a refund and you need to fix this issue.

### 1/5 — Scam

*2020-12-30*

App does not measure spectrum.  iPhone does not have spectral sensor.  I compared this apps readings to Sekonic C7000 spectrometer and a Photo Research PR670 ($20,000 instrument). This app’s readings are completely wrong.

### 1/5 — Very misleading

*2020-12-16*

This app claims to show you a spectrum of the light it is observing.  This is impossible since each IPhone pixel can only measure the relative strengths of the red, blue and green light entering the camera.   This makes suspicious of every bit of data the app displays

### 1/5 — Amazing?

*2020-09-24, version 4.1.0*

Amazing?

### 1/5 — Camera issues on iPhone X!!

*2020-08-05*

There’s a serious camera issue when opening up the app on the iPhone X on iOS 11.4.1. Video/picture feed is super fuzzy and not sharp at all!

Update: AUG 2020, 2 years later and the camera issue has NOT been fixed!! I’m now on an iPhone 11 Pro Max running iOS 13.6. This app is still having issues focusing both the rear and front facing cameras! Anything in front of it still remains unfocused!! There is still no tap to focus option! What a disappointment and waste of money!!

### 1/5 — Лагает

*2019-12-07*

Аффтор, обнови прогу, чушь показывает.

### 1/5 — Only ever reads 3900

*2019-11-09, version 4.0.5*

Can’t seem to get this app to work and it only ever offers 1 color temp reading.

## Most praised reviews (10 highest-rated)

### 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.

### 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.

### 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。

### 5/5 — Great app

*2022-04-14*

This inexpensive app does a great job on my iPhone of measuring light color temperature which is exactly what I wanted!

### 5/5 — Quite accurate!

*2022-02-13*

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.

### 5/5 — Worked well!

*2021-05-31, version 4.2.1*

I have a flashlight collection with emitters that are color temp calibrated to temperatures such as 2000K, 2700K, 3500K, 4000K, 4500K, 5000K, 5400K, 6000K (and more!). 

I found that this app got CCT correct within 100-200K when used properly. I took a white sheet of paper, shined the light on the paper, then read the paper’s reflection. Aiming the app at the flashlight directly gave skewed results by 1000-2000K upwards.

It’s so accurate that I had a light I had mislabeled as 6000K, and it kept coming up as 4950K. I checked the LED bin (XP-L HI V3 3A) and it was actually 5000K! So the 4950K was dead accurate.

I did notice that as you move away from the 4000-6000K range, the ratings are less accurate. For example, my 2700K lights red as almost 3000K, and 2000K lights read as 2700K. My 660nm pure red lamp reads as 2400K. So keep that in mind. But this is a great value for $2!

### 5/5 — Fantastic app!

*2021-03-12*

Great app with a lot functions.

---

*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 2026-09-08.*