# StellarRAD — Light Spectral Analysis

> Real-time light spectrum analysis and data export for WiFi spectrometers. (iPhone/iPad app by StellarNet, Inc..)

- Source: https://appshunter.io/ios/app/stellarrad/id1544319555 (this page in markdown: same URL + `.md`)
- Developer: [StellarNet, Inc.](https://appshunter.io/developer/1544319557)
- Category: Education, Utilities
- Price: Free
- Rating: 3.60/5 from 10 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 80 MB
- Languages: English
- Released: 2020-12-30
- Data updated: 2026-07-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/stellarrad/id1544319555/reviews.md

## What is StellarRAD?

The StellarRAD App for all WiFi enabled StellarNet spectrometers makes real-time light measurement quick and easy.  Acquire full spectrum analysis of LEDs, lamps, lasers, solar/ grow lights, & just about any type of luminaire from ultra-violet through the visible and near-infrared!  This intuitive app lets users control their spectrometer and capture basic and more advanced light measurement parameters such as spectral irradiance and lumens.  Colorimetric analysis such as CRI (color rendering index), CCT (correlated color temperature), xy chromaticity, and much more.  Easily save and export your data and full spectral graph as .IRR text data file, screenshot, and/or PDF report with all parameters listed.

## Key features

- Real-time light measurement
- Full spectrum analysis
- Control spectrometer
- Spectral irradiance and lumens
- Colorimetric analysis (CRI, CCT, xy)
- Save and export data (.IRR, screenshot, PDF)

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/stellarrad/id1544319555/reviews.md

### 1/5 — doesn't work at all

*2021-08-09*

freezes after tapping one button

### 1/5 — Crashes

*2021-03-21*

Freezes or crashes right after opening.

### 5/5 — Great

*2021-01-10*

Great app! Can’t wait for the colorimeter version so I can measure 🔺E!

## Frequently asked questions about StellarRAD

### What types of light sources can StellarRAD analyze?

StellarRAD can analyze a wide range of light sources including LEDs, lamps, lasers, solar/grow lights, and virtually any luminaire from ultraviolet through visible and near-infrared spectrums.

### What light measurement parameters does StellarRAD offer?

The app allows users to capture basic and advanced light measurement parameters such as spectral irradiance, lumens, CRI (color rendering index), CCT (correlated color temperature), and xy chromaticity.

### How can I export my data from StellarRAD?

You can easily save and export your data and full spectral graph as a .IRR text data file, a screenshot, or a PDF report that includes all listed parameters.

### What devices is StellarRAD compatible with?

StellarRAD is currently supported on iPhones. It requires a WiFi-enabled StellarNet spectrometer to function.

### How often is StellarRAD updated?

The latest version of StellarRAD is 2.2, which was last updated on October 11, 2022. This indicates a moderate update frequency.

### What is the user sentiment for StellarRAD?

StellarRAD has an average rating of 3.6 stars from 10 ratings. This suggests a mixed to positive user reception, with room for improvement.

### Does StellarRAD have ads?

No, StellarRAD does not contain advertisements. The app is free to download and use without any ad interruptions.

### What is the age rating for StellarRAD?

StellarRAD has an age rating of 4+, making it suitable for a broad audience, including younger users who may be interested in light spectrum analysis.

## Version history (last 5 releases)

### 2.2 — 2022-10-11

Review spectral data with demo examples included

- Connect to all zAP2 WiFi enabled StellarNet spectrometers

- Collect raw spectra, irradiance, radiance, lumen, & PAR

- Calculate real-time CRI, CCT, xy Chroma and more!

- Set and control all spectrometer parameters

- Save, export, and share all spectral data

### 2.1 — 2021-01-12

Review spectral data with demo examples included

- Connect to all zAP2 WiFi enabled StellarNet spectrometers

- Collect raw spectra, irradiance, radiance, lumen, & PAR

- Calculate real-time CRI, CCT, xy Chroma and more!

- Set and control all spectrometer parameters

- Save, export, and share all spectral data

### 2.0 — 2021-01-08

- Review spectral data with demo examples included.

- Connect to all zAP2 WiFi enabled StellarNet spectrometers.

- Collect raw spectra, irradiance, radiance, lumen, & PAR.

- Calculate real-time CRI, CCT, xy Chroma and more!

- Set and control all spectrometer parameters.

- Save, export, and share all spectral data.

### 1.9 — 2021-01-07

- Review spectral data with demo examples included.

- Connect to all zAP2 WiFi enabled StellarNet spectrometers.

- Collect raw spectra, irradiance, radiance, lumen, & PAR.

- Calculate real-time CRI, CCT, xy Chroma and more!

- Set and control all spectrometer parameters.

- Save, export, and share all spectral data.

### 1.7 — 2021-01-05

-Check if Watts mode available to user.

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| [Vernier Instrumental Analysis](https://appshunter.io/ios/app/vernier-instrumental-analysis/id1484007878) | — | Free | Education |

## More apps by StellarNet, Inc.

- [ColorWiz](https://appshunter.io/ios/app/colorwiz/id1550983678)
- [ChemWiz](https://appshunter.io/ios/app/chemwiz/id1561211102)
- [Colorwiz Cam](https://appshunter.io/ios/app/colorwiz-cam/id6443781716)

All apps by StellarNet, Inc.: https://appshunter.io/developer/1544319557

## Related topics

[light wavelength](https://appshunter.io/ios/topics/light-wavelength)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-26.*