Comparison

D vs CathDoc

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

Head to head
About

D

This platform revolutionizes AI-assisted surgery and remote diagnosis. It enhances surgical skills through demonstration and collaboration, ensuring precision with AI assistance and quality control. Access secure cloud storage for medical data anytime, anywhere.

Highlights
  • AI-assisted surgery
  • Remote diagnosis
  • Surgical demonstration
  • Real-time collaboration
  • Cloud storage
  • AI-powered quality control
  • Surgical summaries
Features
Read full description

D-VISUAL: The Premier Platform Revolutionizing AI-Assisted Surgery and Remote Diagnosis. Enhance surgical skills and outcomes through surgical demonstration and collaboration. Ensure surgical precision and quality control efficiency with AI assistance and AI-powered quality inspection. Access medical data anytime, anywhere with secure cloud storage. Join us and experience the forefront of intelligent medical services! Surgical Collaboration: Join with a single click. Support simultaneous invitations to multiple experts for real-time surgical guidance. Features drawing tools, two-way voice communication, and seamless switching between multiple surgical signals. Stable and smooth screen, easy collaboration. Surgical Demonstration: One-click broadcast with compatible hardware, customizable for public or internal use. Invite commentary experts anytime for real-time online explanations. Enable audience comments and questions, with real-time visibility of surgical drawings and annotations. Support mixing up to 5 video streams with flexible layout switching. Accommodate millions of viewers online simultaneously. Cloud Storage & Playback: Massive cloud storage with robust account and security systems, ensuring high data privacy and security. View surgical videos anytime on the cloud, share with a single click, and cancel anytime easily for worry-free operation. My Operating Room: Get a clear overview of your operating room status with real-time monitoring and instant access to surgical collaboration. Guide challenging cases, mentor novice doctors, and maintain real-time control over surgical quality. Surgical Summary: Powered by a large neural network model, generate surgical summaries with one click for easy viewing and export, boosting efficiency. AI-Assisted Quality Control: Automatically segment surgical videos, annotate key operations, abnormalities, and exceptions. Enhance quality control efficiency and minimize wasted time.

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

D4 screens
CathDoc4 screens

Verdict

The call

The clearest difference is update cadence: CathDoc at every 3 weeks against D's every 2 months. 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

D ships an update every 2 months, CathDoc every 3 weeks. The most recent releases landed on June 4, 2026 and September 18, 2026 respectively.

Scorecard1 real difference · 8 level
D versus CathDoc: the parameters behind the verdict, then further details
ParameterDCathDoc
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details — not scored
Size78 MB12 MB
Age rating17+4+
DeveloperD-visual Medical Technology Co., LtdLumen Innovations, LLC

In-app purchases

None

D

No in-app purchases

None

CathDoc

No in-app purchases

Questions

Is D free?
D is free to download, with no in-app purchases.
Is CathDoc free?
CathDoc is free to download, with no in-app purchases.
Do D or CathDoc have ads?
Neither D nor CathDoc shows ads.
Which is updated more often, D or CathDoc?
D ships an update every 2 months, and CathDoc every 3 weeks. Most recently, D was updated on June 4, 2026 and CathDoc on September 18, 2026.

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