Comparison

InterSpec Radiation Analysis vs RAYSID

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

InterSpec Radiation Analysis

Analyze nuclear radiation spectral data to identify nuclides, determine source activity, and calculate shielding. Supports various detector file formats and includes tools for dose rate calculations and nuclide decay information.

Highlights
  • Spectral nuclear radiation data analysis
  • Nuclide identification
  • Source activity determination
  • Shielding amount calculation
  • Spectral file format conversion
  • Dose rate calculations
  • Interactive nuclide decay information
Features
Read full description

InterSpec assists in analyzing spectral nuclear radiation data, using a peak-based methodology. Common uses include identifying nuclides present, determining source activity, shielding amounts, source age, or other nuclear reactions present. InterSpec also provides a number of other tools useful for analyzing radiation data including spectral file format converting, dose rate calculations, interactive nuclide decay and reference information, gamma cross section calculations and references, and more. InterSpec can open data files from most common spectral radiation detectors (e.g., most NaI, HPGe, LaBr, CLYC, CsI, etc. based systems) and assist in their analysis.

About

RAYSID

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.

Highlights
  • Real-time count rate and dose rate
  • Automatic isotope identification
  • High-resolution spectrum analysis
  • Device threshold alarms with notifications
  • Export spectrum data to N42 file
  • Phone-side Geiger clicks
Features
Read full description

Raysid is the iOS companion app for the RAYSID CsI(Tl) gamma spectrometer. Connect to your RAYSID over Bluetooth and see radiation in real time: • Live count rate (CPS) and dose rate (µSv/h) • Accumulated dose and yearly projection • 33-bin coarse histogram for quick scanning • 1800-channel high-resolution spectrum with log or linear axis • Automatic isotope identification against a built-in library of 43 reference spectra (natural, medical, and industrial isotopes) • Device threshold alarms with phone notifications, sound, and haptic • Phone-side Geiger clicks through the speaker, AirPods, or car audio • Export the high-resolution spectrum as a standards-compliant N42 file • Local radiation map: record your readings geotagged to where you took them, view them by count rate or dose, with an optional community layer. Recorded only while the app is open; your map stays on your device. You'll need a RAYSID device to use this app. Your measurements, location, and recorded map stay on your phone - nothing is uploaded. This app is an independent companion and is not affiliated with the RAYSID device manufacturer.

Screenshots

InterSpec Radiation Analysis4 screens
RAYSID4 screens

Verdict

The call

The clearest difference is rating: RAYSID at 5.0 against InterSpec Radiation Analysis's 4.2. RAYSID also leads on update cadence (weekly vs every 11 months). InterSpec Radiation Analysis's advantage is ratings volume (10 vs 1) and device support (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

RAYSID holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: InterSpec Radiation Analysis has 10 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

InterSpec Radiation Analysis ships an update every 11 months, RAYSID weekly. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

Scorecard5 real differences · 5 level
InterSpec Radiation Analysis versus RAYSID: the parameters behind the verdict, then further details
ParameterInterSpec Radiation AnalysisRAYSID
PriceFreeFree
Rating4.2 (10 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings10 — better1
Update frequencyEvery 11 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS11.0 — better16.0
Further details — not scored
Size80 MB145 MB
Age rating4+4+
DeveloperWilliam JohnsonIsai Olvera

Customer experience

InterSpec Radiation Analysis

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

RAYSID

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

InterSpec Radiation Analysis

No in-app purchases

None

RAYSID

No in-app purchases

Questions

Is InterSpec Radiation Analysis free?
InterSpec Radiation Analysis is free to download, with no in-app purchases.
Is RAYSID free?
RAYSID is free to download, with no in-app purchases.
Which has better reviews, InterSpec Radiation Analysis or RAYSID?
RAYSID is rated higher. InterSpec Radiation Analysis averages 4.2 out of 5 from 10 ratings, while RAYSID averages 5.0 from 1 ratings.
Do InterSpec Radiation Analysis or RAYSID have ads?
Neither InterSpec Radiation Analysis nor RAYSID shows ads.
Which is updated more often, InterSpec Radiation Analysis or RAYSID?
InterSpec Radiation Analysis ships an update every 11 months, and RAYSID weekly. Most recently, InterSpec Radiation Analysis was updated on October 1, 2026 and RAYSID on October 6, 2026.

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