HATO ONE vs Light Spectrometer Wavelength
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HATO ONE
This utility app measures key light aspects crucial for poultry welfare and performance. It allows comparison with industry standards and export of data for analysis. Remote measurement capabilities enhance user convenience.
- Measures light intensity
- Measures critical color temperature
- Measures light spectrum
- Measures color rendering index
- Measures light flicker
- Compares measurements to standards
- Exports data to PC
- Remote measurement
Read full descriptionHide full description
The HATO ONE is an all-in-one light meter. A must-have for every poultry specialist who is aiming to improve animal welfare and performances by means of lighting. This product is able to measure all key aspects of light that matter for poultry: • Light intensity • Critical Colour Temperature • Light spectrum • Colour Rendering Index • Light flicker After measurement, the HATO ONE enables you to compare specific measurement results with poultry needs, human needs or other lamps on the spot to directly allocate points of improvement. All measurement data can be exported to a PC for further analysis as well. The results after measurement can immediately be seen at the HATO ONE App. Furthermore, the HATO ONE APP makes it possible to measure from a distance, so you don’t have to keep the meter in your hands all the time. Improve performances, start measuring! More information? www.hato.one
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.
- Measures dominant wavelength (nm)
- Measures frequency (THz)
- Measures period length (fs)
- Real-time measurement
- Save measurements with notes
- Optional calibration
Read full descriptionHide 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
Verdict
The clearest difference is review sentiment: Light Spectrometer Wavelength at 72% against HATO ONE's 0%. Light Spectrometer Wavelength also leads on rating (4.2 vs 2.0) and update cadence (every 2 months vs every 8 months). HATO ONE's advantage is in-app purchases (none vs 7) and iOS requirement (11.0 vs 15.0). On price, ads and device support 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
Both are free to download. Light Spectrometer Wavelength sells 4 in-app purchases, starting at $0.99 per month. HATO ONE asks for nothing beyond the download.
Light Spectrometer Wavelength holds the better App Store score, 4.2 against 2.0. That said, the two scores are not equally well evidenced: Light Spectrometer Wavelength has 92 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 0% of HATO ONE's written reviews are positive against 72% of Light Spectrometer Wavelength's.
HATO ONE ships an update every 8 months, Light Spectrometer Wavelength every 2 months. The most recent releases landed on June 4, 2026 and September 22, 2026 respectively.
| Parameter | HATO ONE | Light Spectrometer Wavelength |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (5 ratings) | 4.2 (92 ratings) — better |
| Positive reviews | 0.0% of reviews | 71.9% of reviews — better |
| Number of ratings | 5 | 92 — better |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 31 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | United Power Research Technology Corporation | Contechity AB |
Customer experience
HATO ONE
Light Spectrometer Wavelength
In-app purchases
HATO ONE
No in-app purchases
Light Spectrometer Wavelength
- Full Access7 Days trial$0.991 Month
- Full access14 Days trial$0.991 Month
- Full access$4.991 Year
- Full access4 variants$6.99
Questions
Is HATO ONE free?
Is Light Spectrometer Wavelength free?
Which has better reviews, HATO ONE or Light Spectrometer Wavelength?
Do HATO ONE or Light Spectrometer Wavelength have ads?
Which is updated more often, HATO ONE or Light Spectrometer Wavelength?
Other comparisons















