Comparison

BED Calculator vs Thoracic Lymph Node Map

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

Head to head
About

BED Calculator

This tool helps radiation oncology professionals calculate Biological Effective Dose (BED) and Equivalent Dose in 2 Gy fractions (EQD2) using the Linear-Quadratic model. It offers a streamlined interface for rapid dose calculations, including cumulative dose summation and fractionation conversion, and is now available on Apple Watch.

Highlights
  • Biological Effective Dose (BED) calculation
  • Equivalent Dose in 2 Gy fractions (EQD2) calculation
  • Linear-Quadratic (LQ) model
  • Cumulative dose summation
  • Fractionation conversion
  • Apple Watch support
Features
Read full description

BED Calculator is a professional-grade tool for computing Biological Effective Dose (BED) and Equivalent Dose in 2 Gy fractions (EQD2) using the Linear-Quadratic (LQ) model. Developed for radiation oncologists, medical physicists, and radiation therapy technologists, it enables rapid and reliable dose calculations in an efficient, streamlined interface — now available on Apple Watch. Features Intuitive scroll-based input for swift BED and EQD2 calculation Cumulative dose summation across up to 3 separate treatment courses Fractionation conversion: calculate the number of fractions required to achieve an equivalent BED at a modified dose per fraction, and vice versa Apple Watch support for quick calculations Dark Mode support Disclaimer This application is intended for educational and academic reference purposes only. It is not intended for direct clinical decision-making. Any clinical application is undertaken solely at the user's own discretion and responsibility. The developer accepts no liability for any loss or damage arising from the use of this application.

About

Thoracic Lymph Node Map

This clinical decision-support tool helps healthcare professionals evaluate and locate thoracic lymph node stations on CT scans. It offers a color-coded map with definitions, N-category information, and sampling options, adapted from IASLC guidelines.

Highlights
  • Color-coded IASLC lymph node map
  • Anatomic definitions and N-category info
  • CT-based station overlays
  • Station detail cards
  • Common issues insights
  • Offline access
Features
Read full description

Thoracic Lymph Node Map is a clinical decision-support reference that streamlines the evaluation and localization of thoracic lymph node stations on CT. Adapted from the International Association for the Study of Lung Cancer (IASLC) lung cancer project, the app provides a clear, color-coded map of mediastinal, low cervical, and hilar lymph node stations with concise anatomic definitions, N-category information, and sampling options—right at the point of care. Version 4.0 has been rebuilt from the ground up and optimized for iOS 26, featuring a modern, responsive interface designed for radiologists, pulmonologists, oncologists, surgeons, and any health care professional interpreting chest imaging. The app is provided entirely free of charge, with no ads, no subscriptions, and no in-app purchases. --- Key Features IASLC Thoracic Lymph Node Map Integration • Color-coded map adapted from the IASLC lung cancer project • Clear station labels (1–14) with concise anatomic definitions CT-Based Station Overlays • Navigate representative axial CT images of the thorax • Visualize how each lymph node station relates to key mediastinal structures Station Detail Cards • N-category classification (N1/N2/N3) for every station • Common sampling options at a glance • Precise upper, lower, and lateral/anterior/posterior boundaries Common Issues Insights • High-yield clarifications for frequently confused stations • Guidance on distinguishing 4 vs 10, 1 vs 2/3, and more • Aid in aligning CT interpretation with IASLC definitions Enhanced Readability • Support for Dark Mode and Dynamic Type • Clean, distraction-free layout optimized for both iPhone and iPad Offline Access • All data available offline—no login, no network, no server required Requirements • iPhone or iPad running iOS / iPadOS 16.6 or later • Fully optimized for iOS 26 Pricing Thoracic Lymph Node Map is developed and maintained by radiologists. It is provided as a free resource for the medical community, with no advertisements and no subscription required. Medical Disclaimer: This app is for informational purposes only and is not a substitute for professional medical advice. In addition to using this app, always consult a qualified healthcare provider for diagnosis and treatment decisions. Privacy Policy: https://radiologiq.squarespace.com/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

BED Calculator4 screens
Thoracic Lymph Node Map4 screens

Verdict

The call

The clearest difference is update cadence: Thoracic Lymph Node Map at every 7 months against BED Calculator's every 41 months. Thoracic Lymph Node Map also leads on ratings volume (25 vs 3). BED Calculator's advantage is rating (5.0 vs 4.8). On price, review sentiment, ads and in-app purchases 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

BED Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Thoracic Lymph Node Map has 25 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

BED Calculator ships an update every 41 months, Thoracic Lymph Node Map every 7 months. Both last shipped on November 1, 2026.

Scorecard3 real differences · 7 level
BED Calculator versus Thoracic Lymph Node Map: the parameters behind the verdict, then further details
ParameterBED CalculatorThoracic Lymph Node Map
PriceFreeFree
Rating5.0 (3 ratings) — better4.8 (25 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings325 — better
Update frequencyEvery 41 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.616.6
Further details — not scored
Size4 MB128 MB
Age rating4+12+
DeveloperMARGINAL GAINS INC.RADIOLOGiQ, LLC

Customer experience

BED Calculator

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Thoracic Lymph Node Map

All ratings25 ratings
Positive96.0%
Neutral0.0%
Negative4.0%
Written reviews18 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

BED Calculator

No in-app purchases

None

Thoracic Lymph Node Map

No in-app purchases

Questions

Is BED Calculator free?
BED Calculator is free to download, with no in-app purchases.
Is Thoracic Lymph Node Map free?
Thoracic Lymph Node Map is free to download, with no in-app purchases.
Which has better reviews, BED Calculator or Thoracic Lymph Node Map?
BED Calculator is rated higher. BED Calculator averages 5.0 out of 5 from 3 ratings, while Thoracic Lymph Node Map averages 4.8 from 25 ratings.
Do BED Calculator or Thoracic Lymph Node Map have ads?
Neither BED Calculator nor Thoracic Lymph Node Map shows ads.
Which is updated more often, BED Calculator or Thoracic Lymph Node Map?
BED Calculator ships an update every 41 months, and Thoracic Lymph Node Map every 7 months. Most recently, BED Calculator was updated on November 1, 2026 and Thoracic Lymph Node Map on November 1, 2026.

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