Comparison

IR4U vs CathDoc

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

Head to head
About

IR4U

This platform offers educational resources and interactive features for learning about interventional radiology. It provides case studies, courses, presentations, and study materials, connecting users with experts in the field.

Highlights
  • Field Level Case Studies
  • Interactive Expert Chat
  • IR Courses
  • Presentations
  • Study Material
  • Expert Reviews
Features
Read full description

IR4U, "Interventional Radiology 4U," is a dedicated online platform designed to cater to a wide audience, including medical students, healthcare professionals, and the general public. The brainchild of Dr. Ram Kishore Gurajala MD, IR4U was born out of a visionary idea to create an educational website that democratizes access to knowledge. Dr. Gurajala's passion for radiology and his commitment to breaking down financial barriers have led to the creation of this invaluable resource. IR4U's mission is to empower individuals by providing them with the knowledge and tools needed to excel in interventional radiology. Through its user-friendly interface and rich content offerings, IR4U aims to bridge the gap between medical education and practice, making high-quality medical education accessible to all. As a prestigious and user-centric resource, IR4U continues to evolve and expand its offerings, staying true to its founder's vision of advancing interventional radiology education and fostering a community of informed healthcare professionals and enthusiasts. Whether you are a medical student embarking on your educational journey or an experienced healthcare professional seeking to broaden your knowledge, IR4U welcomes you to explore its comprehensive and enriching world of interventional radiology. Key Features of IR4U Field Level Case Studies: IR4U offers a comprehensive collection of real-world case studies in the field of interventional radiology. These cases provide a valuable learning experience, allowing users to explore various medical scenarios and treatment approaches. Interactive Expert Chat: The platform includes a chat feature that enables users to directly communicate with experienced experts in the field of interventional radiology. This interactive element fosters knowledge sharing and facilitates discussions on complex medical topics. IR Courses: IR4U hosts a range of educational courses related to interventional radiology. These courses are designed to cater to different levels of expertise, from beginners to advanced practitioners, ensuring that learners can acquire the knowledge and skills they need. Presentations: Users can access a repository of presentations on interventional radiology topics. These presentations serve as valuable resources for both learning and reference purposes, making it easier for individuals to grasp complex concepts. Study Material: IR4U provides a wealth of study materials, including articles, research papers, and reference guides. These resources are curated to support in-depth learning and research within the field of interventional radiology. Expert Reviews: The platform boasts endorsements and reviews from experts in the field, highlighting the credibility and usefulness of IR4U as a reputable source of information in the domain of interventional radiology.

About

CathDoc

Features
Read full description

CathDoc is the essential coding companion for interventional cardiologists. Designed by cardiologists, for cardiologists, this app streamlines procedure documentation and ensures accurate billing compliance with 2026 Medicare guidelines. KEY FEATURES: - 2026 Code Coverage Complete coverage of interventional cardiology codes including diagnostic catheterization, PCI, structural heart, TAVR, peripheral vascular, and mechanical circulatory support procedures. - Multi-Vessel PCI Support Easily document first, second, and third vessel interventions with proper coronary modifier assignment (LD, LC, RC, LM, RI) for Medicare billing compliance. - NEW 2026 Drug-Coated Balloon Codes Includes new codes with bundling guidance for IVUS/OCT imaging. - Redesigned Peripheral Vascular Codes Complete 2026 peripheral code overhaul with territory-based organization (Iliac, Femoral/Popliteal, Tibial/Peroneal, Inframalleolar) and lesion complexity differentiation. - RVU Calculator Real-time physician work RVU calculations with 2026 Medicare conversion factor ($36.04) for reimbursement estimates. - Coding Validation & Feedback Automatic detection of coding errors, missing vessel modifiers, and NCCI bundling conflicts. Modifier -59 guidance for same-day diagnostic cath with PCI. - What's New 2026 Reference Built-in educational guide explaining all major 2026 code changes for coronary, peripheral, and structural heart procedures, including official definitions. - HIPAA Compliant No patient names or PHI stored. Uses case IDs only for procedure documentation. - ICD-10 Indications Quick selection of common cardiac, peripheral, and structural heart procedure indications. - Moderate Sedation Tracking Built-in sedation time calculator with proper 99152/99153 code assignment. SUPPORTED PROCEDURE CATEGORIES: - Diagnostic Cardiac Catheterization - Percutaneous Coronary Intervention (PCI) - Drug-Coated Balloon (NEW 2026) - Intravascular Imaging (IVUS/OCT) - Coronary Physiology (FFR/iFR/CFR) - Structural Heart (ASD, VSD, PFO, LAA closure) - TAVR (all access approaches) - Peripheral Vascular Interventions - Mechanical Circulatory Support (Impella, IABP, ECMO) Developed by Lumen Innovations for the interventional cardiology community.

Screenshots

IR4U4 screens
CathDoc4 screens

Verdict

The call

The clearest difference is device support: CathDoc at 3 against IR4U's 1. CathDoc also leads on iOS requirement (15.6 vs 17.0). On price, update cadence, 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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 13, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 7 level
IR4U versus CathDoc: the parameters behind the verdict, then further details
ParameterIR4UCathDoc
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.6 — better
Further details — not scored
Size36 MB12 MB
Age rating17+4+
DeveloperIR4ULumen Innovations, LLC

In-app purchases

None

IR4U

No in-app purchases

None

CathDoc

No in-app purchases

Questions

Is IR4U free?
IR4U is free to download, with no in-app purchases.
Is CathDoc free?
CathDoc is free to download, with no in-app purchases.
Do IR4U or CathDoc have ads?
Neither IR4U nor CathDoc shows ads.
Which is updated more often, IR4U or CathDoc?
IR4U ships an update every 3 weeks, and CathDoc every 3 weeks. Most recently, IR4U was updated on September 13, 2026 and CathDoc on September 18, 2026.

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