The ECG reference
that works as hard
as you do on shift.

Built for ER doctors, residents, and interns who can’t afford to guess. ECG Mastery delivers cardiologist-reviewed rhythm interpretation, high-yield training, and ready-to-deploy orders — all from your pocket, in real time.

GET IT ON Google Play Explore Features
Six Core Modules

Every tool you need.
Nothing you don’t.

From first-year intern to seasoned attending, ECG Mastery adapts to your level — covering everything from foundational theory to live clinical decision support.

ECG Basics

Master the electrical language of the heart. Step-by-step progression through wave morphology, intervals, axis deviation, and chamber enlargement — built on first principles, not memorisation.

PQRST Morphology Axis Calculation Intervals & Segments

ECG Library

High-fidelity, mathematically generated tracings covering over 120 structural patterns, arrhythmias, and rare conditions. Each entry includes diagnostic criteria, key differentials, and clinical pearls drawn from peer-reviewed cardiology literature — the depth of a cardiology fellowship, in your pocket.

120+ Conditions Rare Arrhythmias Diagnostic Criteria Clinical Pearls

Drug Library

A Medscape-caliber cardiac pharmacology reference. Mechanisms of action, indications, dosing by weight and renal function, available formulations, and adverse effect profiles — all in one place.

Mechanisms Dosing Tables Indications

Qbank

A massive, high-yield question bank spanning the entire cardiovascular system. Board-style clinical vignettes with expert explanations, curated difficulty tiers, and clear explanations to close every knowledge gap before your next exam or shift.

800+ Questions Arrhythmias Acute Coronary Syndromes

Orders

Complete, pre-formatted order sets for every acute ER cardiology scenario. From STEMI activation to rate-control protocols — reviewed by attending cardiologists, ready in seconds.

STEMI Protocol ACS Orders Arrhythmia Management

Clinical Scenarios

Immersive, case-based emergency simulations that put you in the resus bay. Dynamic patient presentations, branching decision trees, and immediate expert feedback — sharpen your acute clinical judgement without the stakes.

Branching Cases Time Pressure Expert Debrief
Built With Clinicians

Built the way clinicians
actually work.

Every piece of content is written and reviewed before it reaches your screen — not crowdsourced, not generic.

MD-Reviewed
Every ECG, drug entry, and order set is reviewed by board-certified cardiologists before publishing
Hospital-Format
Order sets built to match real clinical documentation, not generic templates
Offline-Ready
Download your content once and study without a connection, wherever your shift takes you
Always Current
New Qbank questions and clinical scenarios added regularly
Pricing

One subscription.
No paywalled clinical content.

Start free with the essentials — upgrade any time to unlock the full Qbank, library, and clinical scenarios.

Free

For getting comfortable with the basics.

$ 0
Full ECG Basics module
Full ECG Library
Full Drug Library
A taste of Qbank, Orders & Scenarios

Monthly

Full access, billed every month.

$ 8.99

Billed monthly · cancel anytime

Everything in Free
Unlimited Qbank
Order sets & clinical scenarios
Offline access
Use it on 1 device
Most Popular

3 Months

Full access, billed quarterly.

$ 23.99

Billed every 3 months · cancel anytime

Save 11% vs. monthly
Everything in Monthly
Unlimited Qbank
Order sets & clinical scenarios
Offline access
Use it on up to 2 devices

6 Months

Full access, billed twice a year.

$ 43.99

Billed every 6 months · cancel anytime

Everything in Monthly
Unlimited Qbank
Order sets & clinical scenarios
Offline access
Use it on up to 3 devices
FAQ

Questions clinicians
actually ask us.

Can’t find what you need? Reach out and a real clinician on our team will answer.

Every ECG, drug entry, and order set in the app is written and reviewed by board-certified cardiologists before it’s published. That said, ECG Mastery is a reference and training tool, not a diagnostic device. Always confirm findings against your own clinical judgment and your institution’s protocols.
No. ECG Mastery is built to support your training and practice, not replace it. Use it as a fast reference and a way to sharpen your interpretation skills. The final call on any patient is always yours.
Yes, with any paid plan. Download your content once and it’s available without a connection, wherever your shift takes you. The Free plan requires an internet connection.
The ECG Library, Drug Library, and Units 1–5 of ECG Basics are free, permanently. A paid plan unlocks Unit 6: Interpretation, unlimited Qbank, every clinical scenario, every order set, and offline access.
No. ECG Mastery grows with you. Start with ECG Basics as a student, then use the full ECG Library, Drug Library, and clinical Order sets once you’re on rotations or in practice.
The Monthly plan works on 1 device. The 3-Month plan works on up to 2 devices, and the 6-Month plan works on up to 3 devices.
Yes. Cancel anytime from your device’s app store settings, no questions asked. You’ll keep full access until the end of your current billing period.
Refunds are handled by Google Play and the App Store, not directly by us — each platform has its own refund process and policy. If you’re not sure where to start, contact us and we’ll point you in the right direction.
Yes. New Qbank questions, clinical scenarios, and content updates are added regularly, and subscribers get them as soon as they’re published.
Yes. Your study data is used only to personalize your experience in the app. We don’t sell your data. Full details are in our Privacy Policy.
ECG Mastery is available today on Android, via Google Play. iOS support is planned.
Free to start · No credit card required

Be sure on every shift, not just the easy ones.

Built for ER doctors, residents, and interns who can’t afford to guess when the tracing on screen actually matters.

Download Free View Pricing

Available on Google Play · Cancel anytime