Comparison

Colorimeter App vs Light Spectrometer Wavelength

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Colorimeter App

Capture and analyze colors from your camera or photos. Get detailed information, convert between various color formats, and access extensive color lists. Includes tools for color mixing, difference calculation, and even color blindness tests.

Highlights
  • Pick color from camera
  • Pick color from photos
  • Color conversion
  • Color mixer
  • Color difference calculation
  • CSS and RAL color lists
  • Color blindness tests
Features
Read full description

The application allows to decompose a color into components from selected picture or using camera. Features: - Picking color from the camera - Picking color from the photos - Converter - Picker - Mixer - Color Difference - CSS Colors List - RAL Classic Colors List - Tests for color blindness - Save and Edit the picked color Color conversions are possible in formats: RGB, RGB%, RGB 0-1, HEX, CMY, CMYK, XYZ, HSB/HSV, HSL, LAB, WEBSAFE, RYB, YUV. Localization supported: Afrikaans, Arabic, Bangla, Czech, Danish, German, Greek, English, Spanish, Finnish, Filipino, French, Gujarati, Hebrew, Hindi, Croatian, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Malayalam, Marathi, Malay, Dutch, Punjabi, Polish, Portuguese, Russian, Slovak, Swedish, Tamil, Telugu, Thai, Tagalog, Turkish, Ukrainian, Vietnamese, Chinese (China Mainland), Chinese (Taiwan). Attention: the color names are used only as illustration of similar color, do not use the color names in situations that may be associated with risk to life and health. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Light Spectrometer Wavelength

This application analyzes light to determine its dominant wavelength in nanometers, frequency in terahertz, and period length in femtoseconds. It provides real-time measurements and allows users to save their findings with notes. The app is designed for measuring colored light sources.

Highlights
  • Measures dominant wavelength (nm)
  • Measures frequency (THz)
  • Measures period length (fs)
  • Real-time measurement
  • Save measurements with notes
  • Optional calibration
Features
Read full description

Measures light spectrum to determine the dominant wavelength in nm, frequency in THz and period length in fs. DOMINANT WAVELENGTH Dominant wavelength is a concept commonly used in the field of color science and perception. It refers to the wavelength of light that appears most prominent or dominant in a given color mixture or light source. In other words, it is the wavelength that our eyes perceive as the primary color in a mixture of different wavelengths. For light with only one wavelength, such as the light from a colored LED, the dominant wavelength corresponds to the wavelength of that light. KEY FEATURES • High accuracy • Real-time measurement • Measures light wavelength in nanometers (nm) • Measures light frequency in terahertz (Thz) • Measures light period length in femtoseconds (fs) • Easy to use • Save measurements with notes • Supports 40 languages, including english • Optional calibration for enhanced precision MEASURING 1. Find a white surface, such as a plain piece of white paper 2. Point your camera at the surface illuminated by your target light source 3. The app gives you accurate measurements in real-time LIMITATIONS Smartphone cameras have limitations when it comes to distinguishing between different very short, or very long wavelengths. More specifically, on many devices the accuracy below 465 nm and above 610 nm is very limited. This is due to the physical camera sensors in the devices. An automatic warning appears on the screen for these short and long wavelengths. WHITE LIGHT Note that is not meaningful to measure the dominant wavelength of white light as white light consists of a wide range of wavelengths, with no wavelength dominating. This app is made for measuring colored light. If you are interested in determining the color temperature of white light, please instead use our popular White Balance Kelvin Meter app. COLOR OF SURFACES If you want to measure the color of a surface or material, rather than of light, please instead use our popular Colorimeter Camera Color Meter app. Privacy Policy, https://spectrometer.contechity.com/pp.html End User License Agreement, https://spectrometer.contechity.com/eula.html CONTACT I value your feedback. Email me at apps@contechity.com with any suggestions or questions. Download the Spectrometer now!

Screenshots

Colorimeter App4 screens
Light Spectrometer Wavelength4 screens

Verdict

The call

The clearest difference is ads: Light Spectrometer Wavelength at none against Colorimeter App's shown. Colorimeter App's advantage is rating (4.7 vs 4.2) and update cadence (every 3 weeks vs every 2 months). On price, review sentiment, ratings volume and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Colorimeter App sells 2 in-app purchases, starting at $0.49 per month and Light Spectrometer Wavelength sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Colorimeter App holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 137 and 92 respectively. Written reviews complicate that: 64% of Colorimeter App's written reviews are positive against 72% of Light Spectrometer Wavelength's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Colorimeter App ships an update every 3 weeks, Light Spectrometer Wavelength every 2 months. The most recent releases landed on September 20, 2026 and September 22, 2026 respectively.

Scorecard3 real differences · 7 level
Colorimeter App versus Light Spectrometer Wavelength: the parameters behind the verdict, then further details
ParameterColorimeter AppLight Spectrometer Wavelength
PriceFreeFree
Rating4.7 (137 ratings) — better4.2 (92 ratings)
Positive reviews64.3% of reviews71.9% of reviews — better
Number of ratings137 — better92
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.1 — better15.0
Further details — not scored
Size37 MB43 MB
Age rating4+4+
DeveloperSerhii SmykContechity AB

Customer experience

Colorimeter App

All ratings136 ratings
Positive93.4%
Neutral4.4%
Negative2.2%
Written reviews14 reviews
Positive64.3%
Neutral7.1%
Negative28.6%

Light Spectrometer Wavelength

All ratings92 ratings
Positive80.4%
Neutral3.3%
Negative16.3%
Written reviews32 reviews
Positive71.9%
Neutral3.1%
Negative25.0%

In-app purchases

2 purchases

Colorimeter App

Subscriptions2
  • Premium for 1 month$0.491 Month
  • Premium for 1 year$1.991 Year
4 purchases

Light Spectrometer Wavelength

Subscriptions3
  • Full Access7 Days trial$0.991 Month
  • Full access14 Days trial$0.991 Month
  • Full access$4.991 Year
One-time1
  • Full access4 variants$6.99

Questions

Is Colorimeter App free?
Colorimeter App is free to download, with in-app purchases available.
Is Light Spectrometer Wavelength free?
Light Spectrometer Wavelength is free to download, with in-app purchases available.
Which has better reviews, Colorimeter App or Light Spectrometer Wavelength?
Colorimeter App is rated higher. Colorimeter App averages 4.7 out of 5 from 137 ratings, while Light Spectrometer Wavelength averages 4.2 from 92 ratings.
Do Colorimeter App or Light Spectrometer Wavelength have ads?
Colorimeter App shows ads; Light Spectrometer Wavelength does not.
Which is updated more often, Colorimeter App or Light Spectrometer Wavelength?
Colorimeter App ships an update every 3 weeks, and Light Spectrometer Wavelength every 2 months. Most recently, Colorimeter App was updated on September 20, 2026 and Light Spectrometer Wavelength on September 22, 2026.

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