Comparison

Fox RT Guide vs Actinic

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

Head to head
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. Ā© 2026 Mind Fox Software Solutions Pvt Ltd

About

Actinic

Features
Read full description

Actinic is a fast, fully offline exposure calculator built for film photographers — a film exposure calculator that also solves the one thing most light-meter apps skip: reciprocity failure on long exposures. Dial in a Sunny 16 reading or your own aperture, shutter, and ISO, then read the full wheel of equivalent exposures instantly — no camera permissions, no accounts, no network calls, ever. Shooting past a second? Pick your film stock — Tri-X, HP5 Plus, T-Max, Portra, Acros, and more — and Actinic corrects your exposure time for reciprocity failure using published manufacturer data, so your night shots and long exposures come out right the first time. Included: • Full-stop exposure wheel with Sunny 16 quick-set • Reciprocity calculator with 3 built-in film stocks • Save up to 3 camera + film presets Actinic Pro unlocks the full 12-stock reciprocity library, unlimited saved presets, and third-stop precision to match modern camera dial clicks exactly — one-time purchase, yours forever. Terms of Use (EULA): https://obelisk.club/filmexposurecalculator/terms

Screenshots

Fox RT Guide4 screens
Actinic4 screens

Verdict

The call

The clearest difference is in-app purchases: Fox RT Guide at none against Actinic's 1. Fox RT Guide also leads on iOS requirement (18.6 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Actinic sells 1 one-off in-app purchase. Fox RT Guide asks for nothing beyond the download.

UpkeepUpdate frequency

Fox RT Guide ships an update every 6 weeks, Actinic every 3 weeks. Both last shipped on November 5, 2026.

Scorecard2 real differences Ā· 4 level
Fox RT Guide versus Actinic: the parameters behind the verdict, then further details
ParameterFox RT GuideActinic
PriceFreeFree
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad — betteriPhone
Requires iOS18.6 — better26.0
Further details — not scored
Size3 MB1 MB
Age rating4+4+
DeveloperMind Fox Software Solutions Private Limitedę°ø å¼ 

In-app purchases

None

Fox RT Guide

No in-app purchases

1 purchases

Actinic

One-time1
  • Actinic Pro$4.99

Questions

Is Fox RT Guide free?
Fox RT Guide is free to download, with no in-app purchases.
Is Actinic free?
Actinic is free to download, with in-app purchases available.
Do Fox RT Guide or Actinic have ads?
Neither Fox RT Guide nor Actinic shows ads.
Which is updated more often, Fox RT Guide or Actinic?
Fox RT Guide ships an update every 6 weeks, and Actinic every 3 weeks. Most recently, Fox RT Guide was updated on November 5, 2026 and Actinic on November 5, 2026.

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