doesn't work at all
freezes after tapping one button
Crashes
Freezes or crashes right after opening.
Great
Great app! Can’t wait for the colorimeter version so I can measure 🔺E!
Archived App (Last seen on 26 Jul 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app enables real-time light spectrum analysis using WiFi-enabled spectrometers. It allows users to capture and analyze various light parameters, including spectral irradiance, lumens, and colorimetric data like CRI and CCT. Data can be easily saved and exported in multiple formats.
✓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)
Show original description
What's New in StellarRAD
2.2
October 11, 2022
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
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Developer apps
FAQ
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.
