# LightSpectrum Pro vs Link Apt.

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.

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.

## The numbers

| Metric | LightSpectrum Pro | Link Apt. |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.1 (39 ratings)](https://appshunter.io/ios/app/lightspectrum-pro/id468368751/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/link-apt/id1505882752/reviews)** |
| Number of ratings | **39** | 3 |
| Positive reviews | 28.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Free | Free |
| Best chart rank | **#31** | — |
| Size | 88 MB | 87 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AM PowerSoftware](https://appshunter.io/developer/303958914) | [Yardi Systems, Inc.](https://appshunter.io/developer/425728804) |

## What reviewers say

### LightSpectrum Pro

[App page](https://appshunter.io/ios/app/lightspectrum-pro/id468368751)

**Currently charting:** #31 Top Paid · Utilities (US App Store)

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.

**Highlights:** Color temperature measurement, Color spectrum analysis (360nm-800nm), CIE 1931 white point display, Wavelength filtering and overlay, High accuracy compared to professional devices

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 📸 Accurate white balance measurement for photography
- 💡 Innovative spectrum analysis without expensive equipment
- 💰 Affordable alternative to $1,600+ professional color meters
- 📊 Detailed spectral graph visualization
- 🎯 Useful for photographers, videographers, and lighting professionals

**What reviewers complain about**

- 🐛 Frequent crashes and freezing issues
- 📱 Incompatible with many iPhone models (iPhone 5, 5S, 6, 6+, 11, X)
- ❌ Camera access problems on multiple devices
- 🎨 Inaccurate readings for certain light types (LEDs, low color temps)
- 🖥️ Poor UI scaling on larger screens (iPhone 6+, iPad)

**Reported bugs**

- 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

**Requested features**

- 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


### Link Apt.

[App page](https://appshunter.io/ios/app/link-apt/id1505882752)

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.

**Highlights:** Online resident portal access, Rent payment processing, Maintenance request submission, Push notifications for updates, Convenient mobile access

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is LightSpectrum Pro free?

LightSpectrum Pro costs $1.99, with no in-app purchases.

### Is Link Apt. free?

Link Apt. is free to download, with no in-app purchases.

### Which has better reviews, LightSpectrum Pro or Link Apt.?

Link Apt. is rated higher. LightSpectrum Pro averages 4.1 out of 5 from 39 ratings, while Link Apt. averages 5.0 from 3 ratings.

### Do LightSpectrum Pro or Link Apt. have ads?

Neither LightSpectrum Pro nor Link Apt. shows ads.

### Which is updated more often, LightSpectrum Pro or Link Apt.?

LightSpectrum Pro ships an update every 3 months, and Link Apt. every 13 months. Most recently, LightSpectrum Pro was updated on October 10, 2026 and Link Apt. on September 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*