Dominant λ Light Spectrometer

Name: Dominant λ Light Spectrometer
Rating: 4.33 (709 reviews)
Author: Contechity AB

By: Contechity AB App

This spectrometer app measures the dominant wavelength of light

Overview

Google Play Store

Downloads

75,998 ▲ 734

Data as of 2026-10-03

Rating:

4.33 +3

(709)

Version:

3.7.1

Last updated: 2026-08-25

Ranking

#251,959 ▲ 147

Overall

Features & Capabilities

The Dominant λ Light Spectrometer app leverages your smartphone camera and sophisticated algorithms to measure the dominant wavelength of various light sources. Ideal for analyzing colored LEDs or ambient light, it calculates and displays the wavelength in nanometers, frequency in terahertz, and period length in femtoseconds.

Users simply point their camera at a white or gray surface illuminated by the target light source for accurate results. The app also offers automatic warnings to ensure optimal measurement conditions. While highly precise, accuracy may vary at extreme wavelengths due to device sensor limitations.

Supporting 40 languages and available free for a limited time, this tool opens up new possibilities for exploring light spectra with mobility and ease.

User Growth & Download Statistics

App

By:

Downloads:

Rating:

Version:

3.7.1 Last updated: 2026-08-25

Version code:

Creation date:

2023-08-04

Publisher country:

Permissions:

android.permission.CAMERA Very high risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.INTERNET Low risk
android.permission.WAKE_LOCK Low risk
com.android.vending.BILLING Low risk
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE Low risk
android.permission.ACCESS_NETWORK_STATE Safe
com.android.vending.CHECK_LICENSE Safe
com.contechity.spectrometer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Size:

23.88MB

Email:

ap*****@contechity.com

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-10-03

Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:: Contechity AB
Google Play Store: https://play.google.com/store/apps/details?id=com.contechity.spectrometer
Email:: ap*****@contechity.com
Website:: https://contechity.com

User Reviews

Users appreciate this dominant wavelength spectrometer app as a unique tool for light measurement and educational purposes, noting decent accuracy dependent on camera quality. However, common complaints include the awkward need to bounce light off a white surface, unclear trial period details, limited UV range below 400nm, and occasional accuracy errors. The app is praised for its fair pricing and subscription management, but some wish for more extensive spectral analysis features and calibration options.

Pros

Provides relatively accurate measurement depending on the phone camera used
Useful for testing various light sources including infrared and LED lights
Educative tool for learning fundamentals of optics
Easy to manage subscription with fair pricing
Only light spectrum analyzer app available in the market with unique features

Cons

Requires aiming camera at a white surface rather than directly at light source, which is inconvenient
Limited accuracy due to phone camera restrictions; may show warnings about low saturation and accuracy
Trial period not clearly communicated, leading to confusion about app functionality before purchase
Does not cover UV wavelengths below 400nm, limiting usefulness for UV light detection
Accuracy issues noted with some light sources, and no option for calibration

Recent reviews

Best and very accurate. I buy this one lifetime subscription.

Ma***** 2025-01-10

Appears useless. Says aim the camera at a white surface, not the light source. So have to try to bounce the light source you are measuring off something white. With my computer screens 'bounced' it flips between extreme pure red and extreme deep blue. Obviously wrong. All other locations around the house/garden read around 570. All the time it says "saturation is low, so the accuracy might be low too". So direct light is too bright; medium-bright is too low. Always a warning on screen.