Comparison

EchoRef vs Periop Pacemaker Pro

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

Periop Pacemaker Pro

Features
Currently charting
Read full description

Periop Pacemaker Pro is a smartphone app that assists medical professionals who take care of surgical patients that have implantable defibrillators or pacemakers. The app is based on the American Society of Anesthesiologists (ASA) Perioperative Cardiac Implantable Electronic Device (CIED) Management Aid. Additionally, this version contains the Supplemental Resource on Radiological CIED Identifiers, which is a document that was concurrently developed by the ASA and the Heart Rhythm Society (HRS). As device technology evolves, an expert committee of anesthesiologists, cardiologists, and device representatives will meet as needed to keep information up-to-date.

Screenshots

EchoRef4 screens
Periop Pacemaker Pro4 screens

Verdict

The call

The clearest difference is price: EchoRef at Free against Periop Pacemaker Pro's $9.99. Periop Pacemaker Pro's advantage is chart position (#174 vs unranked) and iOS requirement (13.0 vs 26.0). On 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; Periop Pacemaker Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard3 real differences · 8 level
EchoRef versus Periop Pacemaker Pro: the parameters behind the verdict, then further details
ParameterEchoRefPeriop Pacemaker Pro
PriceFree — better$9.99
Rating4.9 (1.4K ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1.4K — better—
Update frequencyEvery 2 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank—#174 — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size104 MB42 MB
Age rating17+17+
DeveloperRishi KumarRhythm Management, LLC

In-app purchases

None

EchoRef

No in-app purchases

None

Periop Pacemaker Pro

No in-app purchases

Questions

Is EchoRef free?
EchoRef is free to download, with no in-app purchases.
Is Periop Pacemaker Pro free?
Periop Pacemaker Pro costs $9.99, with no in-app purchases.
Do EchoRef or Periop Pacemaker Pro have ads?
Neither EchoRef nor Periop Pacemaker Pro shows ads.

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