D vs CathDoc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- AI-assisted surgery
- Remote diagnosis
- Surgical demonstration
- Real-time collaboration
- Cloud storage
- AI-powered quality control
- Surgical summaries
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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.
CathDoc
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | D | CathDoc |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 78 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | D-visual Medical Technology Co., Ltd | Lumen Innovations, LLC |
In-app purchases
D
No in-app purchases
CathDoc
No in-app purchases









