Light Spectrometer Wavelength vs Backdraft Control
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
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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!
Backdraft Control
This application provides comprehensive control over your Catalyst Wireless FCU, allowing you to fine-tune settings like dwell, delay, and fire modes. It enables firmware updates and system monitoring directly from your mobile device, offering professional-grade customization for airsoft enthusiasts.
- Configure dwell, delay, and fire modes
- Adjust advanced parameters
- Save and load custom presets
- Monitor system behavior
- Update FCU firmware
- Intuitive user interface
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Full Description Backdraft Control gives you complete command over your Catalyst Wireless FCU — the next generation of electronic airsoft replica control systems. Fine-tune every aspect of your setup in seconds through a modern, intuitive interface designed for speed, clarity, and reliability. Adjust dwell, delay, fire modes, and dozens of advanced parameters to match your replica’s exact performance profile. Save and load presets, monitor system behavior, and update firmware — all from your phone — without opening a single panel or touching a wire. Built for airsoft enthusiasts who demand precision and customization, Backdraft Control delivers professional-grade configurability at an affordable price. Whether you’re a competitive player or a field technician, you can now tune, optimize, and update your Catalyst FCU effortlessly — anytime, anywhere.
Screenshots
Verdict
The clearest difference is rating: Backdraft Control at 5.0 against Light Spectrometer Wavelength's 4.2. Backdraft Control also leads on in-app purchases (none vs 7) and review sentiment (100% vs 72%). Light Spectrometer Wavelength's advantage is update cadence (every 2 months vs every 9 months) and ratings volume (92 vs 2). 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
Both are free to download. Light Spectrometer Wavelength sells 4 in-app purchases, starting at $0.99 per month. Backdraft Control asks for nothing beyond the download.
Backdraft Control 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 2, so its average is the more settled of the two. Written reviews point the same way: 72% of Light Spectrometer Wavelength's written reviews are positive against 100% of Backdraft Control's.
Light Spectrometer Wavelength ships an update every 2 months, Backdraft Control every 9 months. The most recent releases landed on September 22, 2026 and August 9, 2026 respectively.
| Parameter | Light Spectrometer Wavelength | Backdraft Control |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (92 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 71.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 92 — better | 2 |
| Update frequency | Every 2 months — better | Every 9 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.1 |
| Further details — not scored | ||
| Size | 43 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Contechity AB | Ben Pauza |
Customer experience
Light Spectrometer Wavelength
Backdraft Control
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
Backdraft Control
No in-app purchases
Questions
Is Light Spectrometer Wavelength free?
Is Backdraft Control free?
Which has better reviews, Light Spectrometer Wavelength or Backdraft Control?
Do Light Spectrometer Wavelength or Backdraft Control have ads?
Which is updated more often, Light Spectrometer Wavelength or Backdraft Control?
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