Comparison

X vs Fox RT Guide

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

Head to head
About

X

Calculate radiography shot times for industrial radiographers using radioactive materials. Quickly determine exposure time by inputting curies, steel thickness, and source-to-film distance.

Highlights
  • Calculate radiography shot times
  • Supports Iridium and Cobalt sources
  • Input curies, thickness, and distance
  • Field-tested for accuracy
  • Replaces slide rule calculations
Features
Read full description

Updated for iOS10. Only Useful for Industrial Radiographers! This is an application to replace the aggravating usage of slide rules to calculate radiography shot times. It is applicable to Industrial Radiographers working with radioactive materials (not x-ray machines). It works with both Iridium and Cobalt sources. This app has been tested in the field with working radiography crews and the response has be great. Just set the number of curies, the thickness of the steel (inches), and the source to film distance (in inches). Hit the calculate button and you will have the exposure time.

About

Fox RT Guide

Features
Read full description

Fox RT Guide is the essential companion app for NDT radiography professionals. Whether you work with Film, CR (Computed Radiography), or DR (Digital Radiography) systems, this app puts critical tools and references right in your pocket — on-site and beyond. EXPOSURE CALCULATOR • Recommended mode: Enter material, thickness, and distance — get optimized kV, mA, and focal spot recommendations • Manual mode: Calculate exposure times for X-Ray and isotope sources (Ir-192, Co-60, Se-75, Tm-170) • Supports Film, CR, and DR detectors with ISO 17636-2 compliant geometric unsharpness (Ug) validation • Save and reload up to 10 calculations STANDARDS REFERENCE • Quick-access database of 15+ major NDT standards • Covers ASME, ASTM, ISO, AWS, API, and ASNT codes • Key requirements summary with direct links to official standards bodies TECHNIQUE CHARTS • Material-specific exposure parameters for Carbon Steel, Stainless Steel, and Aluminum • Charts for X-Ray, Ir-192, and Co-60 sources • Separate data for Film (ISO 17636-1), CR, and DR (ISO 17636-2) DICOM / DICONDE IMAGE VIEWER • Open DICOM and standard image files • Window/Level adjustment, zoom, pan, rotate, and flip controls • On-image measurement tool with mm/inch calibration • Full DICOM tag browser with search IQI / PENETRAMETER GUIDE • ASTM E1025 hole-type penetrameter lookup • ISO 19232-1 Wire IQI (W1–W19) reference • ISO 19232-5 Duplex Wire IQI (D1–D13) with SRb requirements SAFETY CALCULATOR • Safe distance calculations for X-Ray and isotope sources • Shielding requirements for lead, concrete, and steel • ALARA guidelines and dose rate reference ADDITIONAL TOOLS • Film Selection Guide — thickness-based film recommendations per ISO 11699-1 • Density Guide — interactive density reference with acceptance ranges • Geometric Unsharpness Calculator — Ug calculation with ISO 17636-2 quality ratings • Defect Interpretation Guide — weld, casting, forging, and processing defects with acceptance criteria per ASME, AWS, API, and ISO codes • Unit Converter — Length, Radioactivity, Dose, Pressure, Temperature, Film Density, and Distance • Detector Performance — DQE, MTF tables, calibration procedures, and Film vs CR vs DR comparison RT QUIZ • 60 questions across 6 categories for ASNT Level I, II, and III certification preparation • Categories: RT Fundamentals, Equipment & Setup, Image Quality, Standards & Codes, Safety, and Defect Interpretation • Instant feedback with detailed explanations • Score tracking with category breakdown Designed by Foxes, for NDT professionals. © 2026 Mind Fox Software Solutions Pvt Ltd

Screenshots

X2 screens
Fox RT Guide4 screens

Verdict

The call

The clearest difference is update cadence: Fox RT Guide at every 6 weeks against X's every 13 months. X's advantage is iOS requirement (8.0 vs 18.6). On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

X ships an update every 13 months, Fox RT Guide every 6 weeks. The most recent releases landed on September 29, 2026 and September 9, 2026 respectively.

Scorecard2 real differences · 8 level
X versus Fox RT Guide: the parameters behind the verdict, then further details
ParameterXFox RT Guide
PriceFreeFree
Rating4.8 (8 ratings) — better—
Positive reviews75.8% of reviews—
Number of ratings8 — better—
Update frequencyEvery 13 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better18.6
Further details — not scored
Size0 MB3 MB
Age rating4+4+
DeveloperLance HendersonMind Fox Software Solutions Private Limited

In-app purchases

None

X

No in-app purchases

None

Fox RT Guide

No in-app purchases

Questions

Is X free?
X is free to download, with no in-app purchases.
Is Fox RT Guide free?
Fox RT Guide is free to download, with no in-app purchases.
Do X or Fox RT Guide have ads?
Neither X nor Fox RT Guide shows ads.
Which is updated more often, X or Fox RT Guide?
X ships an update every 13 months, and Fox RT Guide every 6 weeks. Most recently, X was updated on September 29, 2026 and Fox RT Guide on September 9, 2026.

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