RAYSID
Unofficial RAYSID App
About
This app connects to a RAYSID gamma spectrometer via Bluetooth to display real-time radiation data. It offers detailed spectrum analysis, automatic isotope identification, and customizable device alarms. Data is stored locally on your phone.
What's New in RAYSID
v1.2
July 1, 2026
Version 1.2 • New: Local radiation Map. Record your readings geotagged to where you took them and see them as a colour-coded overlay (count rate or dose rate). Tap the locate button to centre on your position - no recording required. • New: Optional community map layer, showing public RAYSID readings from raysid.com. Toggle it on or off anytime. • Improved isotope identification: more reliable peak detection on high-count spectra, so clear peaks are highlighted as expected. Your measurements, location, and recorded map stay on your device. The map is recorded only while the app is open (no background tracking).
MoreFAQ
What is RAYSID?
RAYSID is the companion app for the RAYSID CsI(Tl) gamma spectrometer. It allows you to connect to your RAYSID device via Bluetooth to view live radiation data and analyze spectra.
Does RAYSID require a RAYSID device?
Yes, you will need a RAYSID device to use this app. The app functions as a companion to the hardware, displaying and analyzing the data it collects.
What kind of radiation data does RAYSID show?
RAYSID displays live count rate (CPS) and dose rate (µSv/h), accumulated dose, and yearly dose projections. It also provides a 33-bin coarse histogram and a 1800-channel high-resolution spectrum.
Can RAYSID identify isotopes?
Yes, RAYSID features automatic isotope identification against a built-in library of 43 reference spectra, including natural, medical, and industrial isotopes.
Does RAYSID store data in the cloud?
No, RAYSID stores nothing in the cloud. All data collected and analyzed by the app stays on your phone, ensuring your privacy.
Can RAYSID export spectrum data?
Yes, RAYSID allows you to export the high-resolution spectrum as a standards-compliant N42 file. This file format is readable by InterSpec and other gamma-spectrum analysis tools.
What devices does RAYSID support?
RAYSID is currently supported on iPhones. The app is designed to work with iOS devices.
How often is RAYSID updated?
The latest version of RAYSID is 1.1, which was last updated on June 28, 2026. Updates typically include bug fixes and feature enhancements.