LightSpectrum Pro vs SySight
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
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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.
SySight
This system monitoring application offers a streamlined, view-only interface. It provides a powerful experience through background monitoring and custom URL scheme collaboration, delivering capabilities not found in other system monitoring tools.
- View-only system monitoring
- Background monitoring
- Custom URL scheme collaboration
- Streamlined interface
- Powerful system insights
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Sysight is most simply and powerful system monitoring application. This application has a view only one, and it is a result that cut extra information. It is bumbling at first glance. But it collaboration using custom URL scheme, and by monitoring in the background, we provide a powerful experience that other system monitoring applications can not be reached.
Screenshots
Verdict
The clearest difference is rating: SySight at 5.0 against LightSpectrum Pro's 4.1. SySight also leads on review sentiment (66% vs 28%) and update cadence (every 5 weeks vs every 3 months). LightSpectrum Pro's advantage is ratings volume (39 vs 2) and chart position (#68 vs unranked). On ads, in-app purchases, monetization model 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
LightSpectrum Pro costs $1.99 and SySight $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SySight holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: LightSpectrum Pro has 39 ratings behind it against 2, 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 66% of SySight's.
LightSpectrum Pro ships an update every 3 months, SySight every 5 weeks. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.
| Parameter | LightSpectrum Pro | SySight |
|---|---|---|
| Price | $1.99 | $0.99 — better |
| Rating | 4.1 (39 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 28.5% of reviews | 66.0% of reviews — better |
| Number of ratings | 39 — better | 2 |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #68 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 88 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | AM PowerSoftware | Nobuo Saito |
Customer experience
LightSpectrum Pro
SySight
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
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- 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
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- 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
SySight
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LightSpectrum Pro
No in-app purchases
SySight
No in-app purchases
Questions
Is LightSpectrum Pro free?
Is SySight free?
Which has better reviews, LightSpectrum Pro or SySight?
Do LightSpectrum Pro or SySight have ads?
Which is updated more often, LightSpectrum Pro or SySight?
Other comparisons
