Comparison

EchoRef vs EMUltrasound

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

Head to head
About

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.

Highlights
  • Point-of-care ultrasound (POCUS)
  • Transthoracic echocardiography (TTE)
  • Transesophageal echocardiography (TEE)
  • Cardiac dimensions and valve measurements
  • Hemodynamic and ultrasound calculations
  • Interventional procedure lessons
Features
Read full description

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.

About

EMUltrasound

Learn essential emergency ultrasound techniques step-by-step. This app guides you through performing exams like FAST, cardiac, and aortic ultrasounds, offering probe placement tips and comparing normal to abnormal images for a comprehensive understanding.

Highlights
  • Step-by-step FAST exam guidance
  • Cardiac, Aortic, and Renal ultrasound training
  • Proper probe placement instructions
  • Tips and tricks for clear views
  • Normal vs. abnormal image comparison
Features
Read full description

From learning how to perform the FAST exam to evaluating for AAA (abdominal aortic aneurysms) to even checking for papilledema, ultrasound has become an absolutely invaluable tool in the emergency department and beyond. EM Ultrasound takes you step-by-step on how to perform the FAST exam, Cardiac, Aortic, Renal, Gallbladder ultrasounds and more. This app explains proper probe placement, highlights tips and trick on how to obtain clear views and compares normal vs abnormal images to assist with gain a thorough understanding. EM Ultrasound is the easiest and most convenient way to learn ultrasound skills; it's like having an ultrasound instructor in the palm of your hand!

Screenshots

EchoRef4 screens
EMUltrasound4 screens

Verdict

The call

The clearest difference is price: EchoRef at Free against EMUltrasound's $9.99. EchoRef also leads on update cadence (every 2 months vs every 48 months) and ratings volume (1.4K vs 1). EMUltrasound's advantage is iOS requirement (12.4 vs 26.0). On rating, 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

EchoRef is free to download; EMUltrasound costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for EchoRef against 5.0 for EMUltrasound. That said, the two scores are not equally well evidenced: EchoRef has 1.4K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

EchoRef ships an update every 2 months, EMUltrasound every 48 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
EchoRef versus EMUltrasound: the parameters behind the verdict, then further details
ParameterEchoRefEMUltrasound
PriceFree — better$9.99
Rating4.9 (1.4K ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings1.4K — better1
Update frequencyEvery 2 months — betterEvery 48 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.012.4 — better
Further details — not scored
Size104 MB18 MB
Age rating17+17+
DeveloperRishi KumarEM Edy, LLC

Customer experience

EchoRef

All ratings1,387 ratings
Positive97.2%
Neutral1.4%
Negative1.4%
Written reviews12 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

EMUltrasound

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EchoRef

No in-app purchases

None

EMUltrasound

No in-app purchases

Questions

Is EchoRef free?
EchoRef is free to download, with no in-app purchases.
Is EMUltrasound free?
EMUltrasound costs $9.99, with no in-app purchases.
Which has better reviews, EchoRef or EMUltrasound?
EMUltrasound is rated higher. EchoRef averages 4.9 out of 5 from 1.4K ratings, while EMUltrasound averages 5.0 from 1 ratings.
Do EchoRef or EMUltrasound have ads?
Neither EchoRef nor EMUltrasound shows ads.
Which is updated more often, EchoRef or EMUltrasound?
EchoRef ships an update every 2 months, and EMUltrasound every 48 months. Most recently, EchoRef was updated on November 2, 2026 and EMUltrasound on November 3, 2026.

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