Comparison

Light Spectrometer Wavelength vs In. Licht Ultra

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

Head to head
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!

About

In. Licht Ultra

This utility measures light spectrum quality to ensure healthy environments, adhering to WELL standards. It connects via Bluetooth to a mobile device for data collection and analysis.

Highlights
  • Measures light spectrum quality
  • Compliant with WELL standards
  • Bluetooth connectivity
  • Assesses healthy lighting environments
  • Mobile app for measurements
Read full description

Compliant with WELL standards, the spectrometer can be used to assess healthy lighting environments. It utilizes Bluetooth communication protocol and an app for measurements.

Screenshots

Light Spectrometer Wavelength4 screens
In. Licht Ultra4 screens

Verdict

The call

The clearest difference is rating: In. Licht Ultra at 5.0 against Light Spectrometer Wavelength's 4.2. In. Licht Ultra also leads on in-app purchases (none vs 7) and update cadence (every 2 weeks vs every 2 months). Light Spectrometer Wavelength's advantage is ratings volume (92 vs 1). On price, ads, device support and iOS requirement 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. Light Spectrometer Wavelength sells 4 in-app purchases, starting at $0.99 per month. In. Licht Ultra asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

In. Licht Ultra holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Light Spectrometer Wavelength has 92 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Light Spectrometer Wavelength ships an update every 2 months, In. Licht Ultra every 2 weeks. The most recent releases landed on September 22, 2026 and July 9, 2026 respectively.

Scorecard5 real differences · 5 level
Light Spectrometer Wavelength versus In. Licht Ultra: the parameters behind the verdict, then further details
ParameterLight Spectrometer WavelengthIn. Licht Ultra
PriceFreeFree
Rating4.2 (92 ratings)5.0 (1 ratings) — better
Positive reviews71.9% of reviews
Number of ratings92 — better1
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size43 MB17 MB
Age rating4+4+
DeveloperContechity ABLawrence Co., Ltd

Customer experience

Light Spectrometer Wavelength

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

In. Licht Ultra

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

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
None

In. Licht Ultra

No in-app purchases

Questions

Is Light Spectrometer Wavelength free?
Light Spectrometer Wavelength is free to download, with in-app purchases available.
Is In. Licht Ultra free?
In. Licht Ultra is free to download, with no in-app purchases.
Which has better reviews, Light Spectrometer Wavelength or In. Licht Ultra?
In. Licht Ultra is rated higher. Light Spectrometer Wavelength averages 4.2 out of 5 from 92 ratings, while In. Licht Ultra averages 5.0 from 1 ratings.
Do Light Spectrometer Wavelength or In. Licht Ultra have ads?
Neither Light Spectrometer Wavelength nor In. Licht Ultra shows ads.
Which is updated more often, Light Spectrometer Wavelength or In. Licht Ultra?
Light Spectrometer Wavelength ships an update every 2 months, and In. Licht Ultra every 2 weeks. Most recently, Light Spectrometer Wavelength was updated on September 22, 2026 and In. Licht Ultra on July 9, 2026.

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