LightSpectrum Pro vs OSpectrometer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LightSpectrum Pro
Measure light source color temperature and spectrum accurately without expensive equipment. View the color spectrum from 360nm to 800nm, and analyze the white point on the CIE 1931 diagram. Overlay filtered wavelengths on camera images to see frequency reflections and intensity.
- Color temperature measurement
- Color spectrum analysis (360nm-800nm)
- CIE 1931 white point display
- Wavelength filtering and overlay
- High accuracy compared to professional devices
Read full descriptionHide full description
With LightSpectrumPro EVO you can measure the color temperature of a light source without having to spend hundreds of dollars on professional devices. LightSpectrumPro EVO has an error of 2 - 8% compared to existing professional products on the market. in addition to the color temperature measurement in Kelvin, LightSpectrumPro EVO allows you to view the color spectrum of the light being examined with a band ranging from 360nm to 800nm. in addition to the spectrum it is possible to display the position of the white point on the CIE 1931 diagram and to apply a filter for wavelengths to display in overlay on the image captured by the cameras which elements reflect a specific frequency and with what intensity.
OSpectrometer
This app uses your device's camera and screen to perform basic optical spectroscopy. Analyze the visible light spectrum of objects, map light wavelengths to RGB values, and save or share your findings. It functions offline without external hardware.
- Visible light spectrum analysis
- RGB color value mapping
- Wavelength selection and scanning
- Front camera reflection sensing
- Save and share results
- Offline functionality
Read full descriptionHide full description
Optical spectroscopy in the visible light spectrum is a commonly used tool in different fields such as health, manufacturing, art, and forensic research. OSpectrometer implements basic spectrometer functions using the built-in camera and screen without requiring external devices or programs. - Visible light spectrum is transformed and mapped to a function that generates RGB (Red Green Blue) color values - A specific light wavelength can be selected and used to illuminate a desired target (i.e., close to the screen) - The whole spectrum or a specific part of the spectrum can be selected and scanned - Front camera is used to sense the reflection from the target object - Consistent and repeatable reflection/absorption amplitude with respect to the color spectrum - The result can be saved and shared - Works offline, no need to connect to any network or internet Privacy-policy: https://software.nanorescenter.com/osprectrometer-privacy-policy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: OSpectrometer at Free against LightSpectrum Pro's $1.99. OSpectrometer also leads on update cadence (every 2 weeks vs every 3 months). LightSpectrum Pro's advantage is rating (4.1 vs 2.0) and in-app purchases (none vs 2). On 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
OSpectrometer is free to download; LightSpectrum Pro costs $1.99 up front. OSpectrometer sells 2 in-app purchases, starting at $2.99 per month. LightSpectrum Pro asks for nothing beyond the download.
LightSpectrum Pro holds the better App Store score, 4.1 against 2.0. That said, the two scores are not equally well evidenced: LightSpectrum Pro has 39 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 28% of LightSpectrum Pro's written reviews are positive against 0% of OSpectrometer's.
LightSpectrum Pro ships an update every 3 months, OSpectrometer every 2 weeks. The most recent releases landed on September 22, 2026 and September 10, 2026 respectively.
| Parameter | LightSpectrum Pro | OSpectrometer |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.1 (39 ratings) — better | 2.0 (4 ratings) |
| Positive reviews | 28.5% of reviews — better | 0.0% of reviews |
| Number of ratings | 39 — better | 4 |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | #198 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 88 MB | 71 MB |
| Age rating | 4+ | 4+ |
| Developer | AM PowerSoftware | NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI |
Customer experience
LightSpectrum Pro
OSpectrometer
Bugs and requests
LightSpectrum Pro
Reported bugs
11 issues- App crashes on startup or during use
- Camera feed not accessible or showing red X icon
- Screen blinking/flashing on first launch
- UI elements cut off on larger screens
- Buttons unresponsive or sticky
Show 6 moreShow fewer
- App freezes and cannot be exited
- Black screen on launch
- Inconsistent readings that change rapidly
- App stuck on opening screen
- Camera focus issues on iPhone X and newer models
- Incompatibility with iOS 5, 6, and newer iPhone models
Requested features
11 requests- Spot metering with crosshairs or target reticle
- Direct DUV (Delta uv) display calculation
- Flicker detection for light sources
- Calibration function for improved accuracy
- Support for fluorescent light preset adjustments
Show 6 moreShow fewer
- Tap-to-focus camera control
- Landscape orientation support
- Ability to disable tutorial tips
- Screenshot capability in landscape mode
- Better documentation and user guide
- Device compatibility information in app store listing
OSpectrometer
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LightSpectrum Pro
No in-app purchases
OSpectrometer
- month3 Days trial$2.991 Month
- year3 Days trial$9.991 Year
Questions
Is LightSpectrum Pro free?
Is OSpectrometer free?
Which has better reviews, LightSpectrum Pro or OSpectrometer?
Do LightSpectrum Pro or OSpectrometer have ads?
Which is updated more often, LightSpectrum Pro or OSpectrometer?
Other comparisons















