Comparison

Thoracic Lymph Node Map vs ContrastRx

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

Head to head
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/

About

ContrastRx

Provides quick access to treatment regimens for life-threatening reactions to radiographic contrast agents. Includes clinical descriptions, visual examples, and treatment protocols, along with helpful calculators and information on nephrogenic systemic fibrosis.

Highlights
  • Treatment regimens for contrast reactions
  • Clinical descriptions and pictorial examples
  • eGFR calculator
  • Pediatric dose calculator
  • Steroid pretreatment regimens
  • Nephrogenic systemic fibrosis overview
Features
Read full description

This app provides quick access to treatment regimens for potentially life-threatening reactions that can occur with iodine or gadolinium radiographic contrast. Included are clinical descriptions, pictorial examples, sound clips, and treatment regimens for the various types of reactions. Also included are a pediatric dose calculator, an eGFR calculator, a self-assessment module, pretreatment medication regimens, and an overview of nephrogenic systemic fibrosis.

Screenshots

Thoracic Lymph Node Map4 screens
ContrastRx4 screens

Verdict

The call

The clearest difference is review sentiment: Thoracic Lymph Node Map at 100% against ContrastRx's 50%. Thoracic Lymph Node Map also leads on rating (4.8 vs 4.4). ContrastRx's advantage is update cadence (every 3 weeks vs every 7 months). On price, ratings volume, 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

Thoracic Lymph Node Map holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 25 and 9 respectively. Written reviews point the same way: 100% of Thoracic Lymph Node Map's written reviews are positive against 50% of ContrastRx's.

UpkeepUpdate frequency

Thoracic Lymph Node Map ships an update every 7 months, ContrastRx every 3 weeks. The most recent releases landed on September 7, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 7 level
Thoracic Lymph Node Map versus ContrastRx: the parameters behind the verdict, then further details
ParameterThoracic Lymph Node MapContrastRx
PriceFreeFree
Rating4.8 (25 ratings) — better4.4 (9 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings25 — better9
Update frequencyEvery 7 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.6
Further details — not scored
Size128 MB9 MB
Age rating12+17+
DeveloperRADIOLOGiQ, LLCMayo Clinic

Customer experience

Thoracic Lymph Node Map

All ratings25 ratings
Positive96.0%
Neutral0.0%
Negative4.0%
Written reviews15 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ContrastRx

All ratings9 ratings
Positive77.8%
Neutral11.1%
Negative11.1%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

In-app purchases

None

Thoracic Lymph Node Map

No in-app purchases

None

ContrastRx

No in-app purchases

Questions

Is Thoracic Lymph Node Map free?
Thoracic Lymph Node Map is free to download, with no in-app purchases.
Is ContrastRx free?
ContrastRx is free to download, with no in-app purchases.
Which has better reviews, Thoracic Lymph Node Map or ContrastRx?
Thoracic Lymph Node Map is rated higher. Thoracic Lymph Node Map averages 4.8 out of 5 from 25 ratings, while ContrastRx averages 4.4 from 9 ratings.
Do Thoracic Lymph Node Map or ContrastRx have ads?
Neither Thoracic Lymph Node Map nor ContrastRx shows ads.
Which is updated more often, Thoracic Lymph Node Map or ContrastRx?
Thoracic Lymph Node Map ships an update every 7 months, and ContrastRx every 3 weeks. Most recently, Thoracic Lymph Node Map was updated on September 7, 2026 and ContrastRx on September 14, 2026.

Other comparisons