---
title: "Light Spectrometer Wavelength - Reviews, Revenue and Downloads in United States | Apple App Store"
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 "
---

# Light Spectrometer Wavelength — United States
> Spectrum Analyzer Spectroscope

![Light Spectrometer Wavelength App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/4e/5f/27/4e5f27d8-6629-0cc0-1609-7024edbc3333/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/400x400bb.png)

**Developer:** [Contechity](https://apptail.io/developer/contechity-rYK)
**Category:** Utilities
**Rating:** 4.2/5 (92 ratings)
**Price:** Free
**Bundle ID:** com.contechity.spectrometer
**Store:** Apple App Store
**Country:** United States
**Version:** 3.8.0 (released 2026-09-01)
**Original Release:** 2023-07-14

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6450930820)
**AppTail Page:** [https://apptail.io/app/light-spectrometer-wavelength-GWln/united-states](https://apptail.io/app/light-spectrometer-wavelength-GWln/united-states)

## Light Spectrometer Wavelength 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, 
End User License Agreement, 

CONTACT
I value your feedback. Email me at apps@contechity.com with any suggestions or questions.

Download the Spectrometer now!

## Light Spectrometer Wavelength Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/47/1d/54/471d5462-98a3-a312-6720-d5ffd70beebd/5640e9e5-847d-4df1-acae-a55a31309cba_1iphone_1en.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/a0/ed/7c/a0ed7cb5-8e8a-8b56-f7bf-15ec001f701f/9sm_iphone_9en.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/30/00/08/30000892-d15d-ab10-1928-8a6cf76990f2/cf2e6913-1b75-4a2d-8644-e3ffedfe6023_6iphone_6en.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/1b/74/e5/1b74e596-faa7-c9b9-ee0f-2633f1434c7b/67c6f59b-61c8-4105-b585-06403bed0278_3iphone_3en.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/85/b0/25/85b02567-6452-6fb6-28b1-47319e85df60/21sm_iphone_21en.png/1242x2688.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/21/e8/9c/21e89cea-1c86-e61b-d671-a0c2f0fca24c/25sm_iphone_25en.png/1242x2688.png)

## Light Spectrometer Wavelength Rating Breakdown in United States
- 5 stars: 64 (70%)
- 4 stars: 10 (11%)
- 3 stars: 3 (3%)
- 2 stars: 1 (1%)
- 1 stars: 14 (15%)

## Light Spectrometer Wavelength Reviews in United States

### *---- "Pay To Try Only"
Seems that this has no trial / demo. You must pay to see if it works for your application or need.
-- my-reviewer, 2024-10-08

### *---- "Terrible"
I got it and it said anything from purple to green was the same color. If I shined a light to get difference, it wouldn’t work.
-- Lve 2 Game, 2024-09-23

### ***** "Test on TV monitor"
Was detecting all the colors on screen
-- 2020 Trumptrain, 2024-09-23

### ***** "Tested a UV lamp"
Tested it against a UV lamp and it detected it accurately.
-- very very happy user!, 2024-05-07

### ***** "Review"
I found this app to be easy to use and would recommend it.  The developer was very helpful and responsive to my questions.
-- Dillsburger, 2024-01-02

### ***** "Great app! Very helpful"
This app works very well! The developer was very kind and helped update the app with better resolution to meet my use. Everything has been very beneficial and I’m grateful for all of the help!
-- Anonymous_Apple, 2023-12-13

[View all Light Spectrometer Wavelength reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## Light Spectrometer Wavelength In-App Purchases
| Item | Price |
|------|-------|
|  Unlimited Access | $1.99 |
| Unlimited Lifetime Access | $4.99 |



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## Light Spectrometer Wavelength Available In
- [United States](https://apptail.io/app/light-spectrometer-wavelength-GWln/united-states)
- [United Kingdom](https://apptail.io/app/light-spectrometer-wavelength-GWln/united-kingdom)
- [Germany](https://apptail.io/app/light-spectrometer-wavelength-GWln/germany)
- [France](https://apptail.io/app/light-spectrometer-wavelength-GWln/france)
- [Thailand](https://apptail.io/app/light-spectrometer-wavelength-GWln/thailand)
- [India](https://apptail.io/app/light-spectrometer-wavelength-GWln/india)
- [Brazil](https://apptail.io/app/light-spectrometer-wavelength-GWln/brazil)
- [Mexico](https://apptail.io/app/light-spectrometer-wavelength-GWln/mexico)
- [Australia](https://apptail.io/app/light-spectrometer-wavelength-GWln/australia)
- [Taiwan](https://apptail.io/app/light-spectrometer-wavelength-GWln/taiwan)
- [Canada](https://apptail.io/app/light-spectrometer-wavelength-GWln/canada)
- [Japan](https://apptail.io/app/light-spectrometer-wavelength-GWln/japan)
- [Italy](https://apptail.io/app/light-spectrometer-wavelength-GWln/italy)
- [Spain](https://apptail.io/app/light-spectrometer-wavelength-GWln/spain)
- [Ukraine](https://apptail.io/app/light-spectrometer-wavelength-GWln/ukraine)
- [Switzerland](https://apptail.io/app/light-spectrometer-wavelength-GWln/switzerland)
- [Türkiye](https://apptail.io/app/light-spectrometer-wavelength-GWln/turkey)
- [Netherlands](https://apptail.io/app/light-spectrometer-wavelength-GWln/netherlands)
- [Czechia](https://apptail.io/app/light-spectrometer-wavelength-GWln/czechia)
- [Denmark](https://apptail.io/app/light-spectrometer-wavelength-GWln/denmark)
- [Malaysia](https://apptail.io/app/light-spectrometer-wavelength-GWln/malaysia)
- [Norway](https://apptail.io/app/light-spectrometer-wavelength-GWln/norway)
- [Vietnam](https://apptail.io/app/light-spectrometer-wavelength-GWln/vietnam)
- [Poland](https://apptail.io/app/light-spectrometer-wavelength-GWln/poland)
- [Colombia](https://apptail.io/app/light-spectrometer-wavelength-GWln/colombia)
- [Philippines](https://apptail.io/app/light-spectrometer-wavelength-GWln/philippines)
- [Belgium](https://apptail.io/app/light-spectrometer-wavelength-GWln/belgium)
- [Hong Kong SAR China](https://apptail.io/app/light-spectrometer-wavelength-GWln/hong-kong)
- [Bulgaria](https://apptail.io/app/light-spectrometer-wavelength-GWln/bulgaria)
- [Jordan](https://apptail.io/app/light-spectrometer-wavelength-GWln/jordan)
- [South Korea](https://apptail.io/app/light-spectrometer-wavelength-GWln/south-korea)
- [Slovakia](https://apptail.io/app/light-spectrometer-wavelength-GWln/slovakia)
- [Pakistan](https://apptail.io/app/light-spectrometer-wavelength-GWln/pakistan)
- [Estonia](https://apptail.io/app/light-spectrometer-wavelength-GWln/estonia)
- [Kuwait](https://apptail.io/app/light-spectrometer-wavelength-GWln/kuwait)
- [Cyprus](https://apptail.io/app/light-spectrometer-wavelength-GWln/cyprus)
- [Azerbaijan](https://apptail.io/app/light-spectrometer-wavelength-GWln/azerbaijan)
- [Nepal](https://apptail.io/app/light-spectrometer-wavelength-GWln/nepal)
- [Guatemala](https://apptail.io/app/light-spectrometer-wavelength-GWln/guatemala)
- [Greece](https://apptail.io/app/light-spectrometer-wavelength-GWln/greece)
- [Austria](https://apptail.io/app/light-spectrometer-wavelength-GWln/austria)
- [Venezuela](https://apptail.io/app/light-spectrometer-wavelength-GWln/venezuela)
- [Portugal](https://apptail.io/app/light-spectrometer-wavelength-GWln/portugal)
- [Chile](https://apptail.io/app/light-spectrometer-wavelength-GWln/chile)
- [Romania](https://apptail.io/app/light-spectrometer-wavelength-GWln/romania)
- [Saudi Arabia](https://apptail.io/app/light-spectrometer-wavelength-GWln/saudi-arabia)
- [Sweden](https://apptail.io/app/light-spectrometer-wavelength-GWln/sweden)
- [Singapore](https://apptail.io/app/light-spectrometer-wavelength-GWln/singapore)
- [Ireland](https://apptail.io/app/light-spectrometer-wavelength-GWln/ireland)
- [South Africa](https://apptail.io/app/light-spectrometer-wavelength-GWln/south-africa)
- [Armenia](https://apptail.io/app/light-spectrometer-wavelength-GWln/armenia)
- [Argentina](https://apptail.io/app/light-spectrometer-wavelength-GWln/argentina)
- [Barbados](https://apptail.io/app/light-spectrometer-wavelength-GWln/barbados)
- [Bahrain](https://apptail.io/app/light-spectrometer-wavelength-GWln/bahrain)
- [Bermuda](https://apptail.io/app/light-spectrometer-wavelength-GWln/bermuda)
- [Brunei](https://apptail.io/app/light-spectrometer-wavelength-GWln/brunei)
- [Belize](https://apptail.io/app/light-spectrometer-wavelength-GWln/belize)
- [Dominican Republic](https://apptail.io/app/light-spectrometer-wavelength-GWln/dominican-republic)
- [Algeria](https://apptail.io/app/light-spectrometer-wavelength-GWln/algeria)
- [Ecuador](https://apptail.io/app/light-spectrometer-wavelength-GWln/ecuador)
- [Egypt](https://apptail.io/app/light-spectrometer-wavelength-GWln/egypt)
- [Finland](https://apptail.io/app/light-spectrometer-wavelength-GWln/finland)
- [Honduras](https://apptail.io/app/light-spectrometer-wavelength-GWln/honduras)
- [Croatia](https://apptail.io/app/light-spectrometer-wavelength-GWln/croatia)
- [Hungary](https://apptail.io/app/light-spectrometer-wavelength-GWln/hungary)
- [Indonesia](https://apptail.io/app/light-spectrometer-wavelength-GWln/indonesia)
- [Israel](https://apptail.io/app/light-spectrometer-wavelength-GWln/israel)
- [Iceland](https://apptail.io/app/light-spectrometer-wavelength-GWln/iceland)
- [Jamaica](https://apptail.io/app/light-spectrometer-wavelength-GWln/jamaica)
- [Kazakhstan](https://apptail.io/app/light-spectrometer-wavelength-GWln/kazakhstan)
- [Lebanon](https://apptail.io/app/light-spectrometer-wavelength-GWln/lebanon)
- [Sri Lanka](https://apptail.io/app/light-spectrometer-wavelength-GWln/sri-lanka)
- [Lithuania](https://apptail.io/app/light-spectrometer-wavelength-GWln/lithuania)
- [Luxembourg](https://apptail.io/app/light-spectrometer-wavelength-GWln/luxembourg)
- [Latvia](https://apptail.io/app/light-spectrometer-wavelength-GWln/latvia)
- [Madagascar](https://apptail.io/app/light-spectrometer-wavelength-GWln/madagascar)
- [North Macedonia](https://apptail.io/app/light-spectrometer-wavelength-GWln/north-macedonia)
- [Macao SAR China](https://apptail.io/app/light-spectrometer-wavelength-GWln/macau)
- [Malta](https://apptail.io/app/light-spectrometer-wavelength-GWln/malta)
- [Mauritius](https://apptail.io/app/light-spectrometer-wavelength-GWln/mauritius)
- [Namibia](https://apptail.io/app/light-spectrometer-wavelength-GWln/namibia)
- [Nigeria](https://apptail.io/app/light-spectrometer-wavelength-GWln/nigeria)
- [New Zealand](https://apptail.io/app/light-spectrometer-wavelength-GWln/new-zealand)
- [Oman](https://apptail.io/app/light-spectrometer-wavelength-GWln/oman)
- [Panama](https://apptail.io/app/light-spectrometer-wavelength-GWln/panama)
- [Peru](https://apptail.io/app/light-spectrometer-wavelength-GWln/peru)
- [Paraguay](https://apptail.io/app/light-spectrometer-wavelength-GWln/paraguay)
- [Slovenia](https://apptail.io/app/light-spectrometer-wavelength-GWln/slovenia)
- [Senegal](https://apptail.io/app/light-spectrometer-wavelength-GWln/senegal)
- [El Salvador](https://apptail.io/app/light-spectrometer-wavelength-GWln/el-salvador)
- [Tunisia](https://apptail.io/app/light-spectrometer-wavelength-GWln/tunisia)
- [Uzbekistan](https://apptail.io/app/light-spectrometer-wavelength-GWln/uzbekistan)
- [United Arab Emirates](https://apptail.io/app/light-spectrometer-wavelength-GWln/united-arab-emirates)

---

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