# LightSpectrum Pro vs Sidus Audio

The clearest difference is price: Sidus Audio at Free against LightSpectrum Pro's $1.99. Sidus Audio also leads on review sentiment (71% vs 28%) and rating (4.4 vs 4.1). LightSpectrum Pro's advantage is chart position (#39 vs unranked). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Sidus Audio is free to download; LightSpectrum Pro costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sidus Audio holds the better App Store score, 4.4 against 4.1. Both are backed by a comparable volume of ratings — 39 and 17 respectively. Written reviews point the same way: 28% of LightSpectrum Pro's written reviews are positive against 71% of Sidus Audio's.

LightSpectrum Pro ships an update every 3 months, Sidus Audio every 6 weeks. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | LightSpectrum Pro | Sidus Audio |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.1 (39 ratings)](https://appshunter.io/ios/app/lightspectrum-pro/id468368751/reviews) | **[4.4 (17 ratings)](https://appshunter.io/ios/app/sidus-audio/id1617213662/reviews)** |
| Number of ratings | **39** | 17 |
| Positive reviews | 28.5% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#39** | — |
| Size | 88 MB | 50 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AM PowerSoftware](https://appshunter.io/developer/303958914) | [Sidus Link Ltd.](https://appshunter.io/developer/1546027954) |

## What reviewers say

### LightSpectrum Pro

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

**Currently charting:** #39 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


### Sidus Audio

[App page](https://appshunter.io/ios/app/sidus-audio/id1617213662)

This app allows professional audio engineers and sound enthusiasts to wirelessly connect and control multiple audio devices. It features an intelligent network for stable communication, centralized monitoring, and parameter presets, all accessible through a user-friendly interface.

**Highlights:** Intelligent audio network, Wireless device control, Centralized monitoring, Parameter presets, Cloud synchronization, Demo mode

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is LightSpectrum Pro free?

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

### Is Sidus Audio free?

Sidus Audio is free to download, with no in-app purchases.

### Which has better reviews, LightSpectrum Pro or Sidus Audio?

Sidus Audio is rated higher. LightSpectrum Pro averages 4.1 out of 5 from 39 ratings, while Sidus Audio averages 4.4 from 17 ratings.

### Do LightSpectrum Pro or Sidus Audio have ads?

Neither LightSpectrum Pro nor Sidus Audio shows ads.

### Which is updated more often, LightSpectrum Pro or Sidus Audio?

LightSpectrum Pro ships an update every 3 months, and Sidus Audio every 6 weeks. Most recently, LightSpectrum Pro was updated on October 14, 2026 and Sidus Audio on October 11, 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.*