LightSpectrum Pro vs Link Apt.
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.
Link Apt.
Manage your residency and access your online portal features directly from your mobile device. Submit maintenance requests and receive updates, and conveniently pay your rent from anywhere.
- Online resident portal access
- Rent payment processing
- Maintenance request submission
- Push notifications for updates
- Convenient mobile access
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Welcome to Link! Enjoy the full functionality from your online resident portal from the ease of an app instead. Download our app to make payments for your rent right from the convenience of your device! Need some maintenance attention but don't have the time to get to the office? No problem! Simply submit your request through the app and get push notifications (if allowed) around updates to your request.
Screenshots
Verdict
The clearest difference is price: Link Apt. at Free against LightSpectrum Pro's $1.99. Link Apt. also leads on rating (5.0 vs 4.1) and iOS requirement (12.0 vs 15.6). LightSpectrum Pro's advantage is update cadence (every 3 months vs every 13 months) and ratings volume (39 vs 3). 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
Link Apt. is free to download; LightSpectrum Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Link Apt. 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 3, so its average is the more settled of the two.
LightSpectrum Pro ships an update every 3 months, Link Apt. every 13 months. The most recent releases landed on October 10, 2026 and September 25, 2026 respectively.
| Parameter | LightSpectrum Pro | Link Apt. |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.1 (39 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 28.5% of reviews | — |
| Number of ratings | 39 — better | 3 |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Best chart rank | #25 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 88 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | AM PowerSoftware | Yardi Systems, Inc. |
Customer experience
LightSpectrum Pro
Link Apt.
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
Link Apt.
Not enough reviews yet to summarise bugs or requests.
In-app purchases
LightSpectrum Pro
No in-app purchases
Link Apt.
No in-app purchases
Questions
Is LightSpectrum Pro free?
Is Link Apt. free?
Which has better reviews, LightSpectrum Pro or Link Apt.?
Do LightSpectrum Pro or Link Apt. have ads?
Which is updated more often, LightSpectrum Pro or Link Apt.?
Other comparisons
