EchoRef vs C8 Health
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EchoRef
This educational reference app provides comprehensive information on point-of-care ultrasound (POCUS), echocardiography, and cardiac measurements. It includes lessons on interventional procedures and hemodynamic calculations for medical professionals.
- Point-of-care ultrasound (POCUS)
- Transthoracic echocardiography (TTE)
- Transesophageal echocardiography (TEE)
- Cardiac dimensions and valve measurements
- Hemodynamic and ultrasound calculations
- Interventional procedure lessons
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Echocardiography and point-of-care ultrasound organized for the bedside. EchoRef is a comprehensive echocardiography and ultrasound reference for physicians, nurses, advanced practice clinicians, sonographers, medical students, and other healthcare learners. Review TEE, TTE, and POCUS videos, check cardiac measurements and diagnostic criteria, evaluate native and prosthetic valves, and perform commonly used ultrasound and hemodynamic calculations, all in one focused reference. FEATURES • Educational video library covering 2D and 3D TEE, interventional echocardiography, mechanical circulatory support, and clinical cases • POCUS instruction for cardiac, lung, abdominal, vascular, and peripheral nerve block examinations • Cardiac anatomy measurements and reference values for chamber size, ventricular function, diastology, and vascular structures • Native valve assessment for aortic, mitral, tricuspid, and pulmonic stenosis and regurgitation • Prosthetic valve reference for surgical valves, TAVR, and prosthesis evaluation • Ultrasound and hemodynamic calculators for valve area, cardiac output, ventricular function, filling pressures, vascular resistance, shunts, fluid responsiveness, and more • Cardiac equations, hemodynamic reference values, and ultrasound physics • Clinical protocols, focused examination guidance, findings atlas, and reporting documentation • Acquisition guidance, measurement tips, common pitfalls, and related clinical content • Global search, favorites, related links, and personal notes EchoRef connects ultrasound physics, image acquisition, echocardiographic interpretation, and bedside decision-making. Whether you are learning standard views, reviewing an unfamiliar finding, evaluating valve disease, or checking a calculation, the app makes relevant information easy to find. Created by Rishi Kumar, MD, FACC (“RK.MD”), an academic adult cardiothoracic anesthesiologist and cardiovascular ICU intensivist committed to free, open-access medical education. Learn more at https://rk.md EchoRef is intended for educational and informational purposes only. It does not provide medical advice and is not a substitute for professional judgment, diagnosis, or treatment. Clinical findings and calculations must be independently verified and interpreted in the context of the individual patient. Seek guidance from a qualified healthcare professional regarding any medical condition. Do not disregard or delay professional medical advice because of information provided by this app.
C8 Health
This application centralizes clinical resources for healthcare teams, embedding them into existing workflows. It offers AI-powered search and smart formats to ensure best practices are readily accessible at the point of care, enhancing efficiency and patient outcomes.
- Centralized clinical resources
- AI-powered search
- Smart content formats
- Workflow integration
- Point-of-care access
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Streamline Clinical Operations and Improve Patient Care. C8 Health is an essential tool for care teams. It brings together all of your vetted clinical resources, embeds them in your existing workflows, and ensures the latest best practices are always delivered to the point of care. - A single location for all of your clinical resources: : Access all your approved clinical resources from any device, anywhere - AI-Powered Search: Quickly find the information you need with advanced search capabilities - Smart Formats: Content is transformed to formats that are easy to access, read and apply C8 Health empowers healthcare professionals to efficiently manage and access clinical knowledge. It significantly enhances the productivity and efficiency of clinical teams by streamlining workflows and ensuring the effective implementation of best practices. For inquiries contact hello@c8health.com For existing user support contact support@c8health.com Start benefiting from C8 Health today and support your team with your best practices, at their fingertips.
Screenshots
Verdict
The clearest difference is ratings volume: EchoRef at 1.4K against C8 Health's 2. C8 Health's advantage is iOS requirement (15.1 vs 26.0). On price, rating, update cadence and ads 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.
On the App Store both sit at effectively the same score — 4.9 for EchoRef against 5.0 for C8 Health. That said, the two scores are not equally well evidenced: EchoRef has 1.4K ratings behind it against 2, so its average is the more settled of the two.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | EchoRef | C8 Health |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (1.4K ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1.4K — better | 2 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 104 MB | 60 MB |
| Age rating | 17+ | 17+ |
| Developer | Rishi Kumar | HeadToToe.io |
Customer experience
EchoRef
C8 Health
In-app purchases
EchoRef
No in-app purchases
C8 Health
No in-app purchases








