EKG Learning, EKG Courses & EKG Questions — EKG Compass — EKG Compass
EKG Compass EKG Compass
World's first interactive ECG interpreter · Free to start

EKG

COMPASS

What is it? AFib.
Interpret the ECG in your hand.

You don't need to have read every textbook first. Start with the tracing in your hand, work it step by step, and reach a diagnosis — so you walk in with your own read before you call your attending.

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★★★★★ 4.2
1,100+ learners trust EKG Compass
Med students · Residents · EM docs
Can you read this ECG? There's a system for this Now you will too
Can you read this?
74 Live
Rhythms
124 Real
Cases
500+ Flash
cards
103 Board
Questions
10 Step
Method
Compass reviewing an ECG at 3am
The moment that matters
It's 3am. The nurse hands you a 12-lead.
Your attending is waiting.
Most residents guess. EKG Compass gives you a structured method to reach for in that moment — practiced the same way, every tracing, until reading ECGs is as fast as taking a pulse.
Start the method →
WATCH A READ COME TOGETHER
Interpret · live walkthrough
From the tracing in your hands to a diagnosis — one step at a time.
12-LEAD ECG · 58M · chest pain, diaphoretic · 25 mm/s · 10 mm/mV
I
aVR
V1
V4
II
aVL
V2
V5
III
aVF
V3
V6
Findings
Coronary territory
Anterior · LAD Lateral · LCx Inferior · RCA
Differential
Final report COPY
TRY READING A LIVE RHYTHM
Lead II · 25 mm/s · 10 mm/mV
Your read
What rhythm is this?
0 correct
EVERYTHING YOU NEED
12-Lead ECG · 25 mm/s · 10 mm/mV
I
V1
II
V2
III
V3
aVR
V4
aVL
V5
aVF
V6
10-Step Method
Holding an ECG right now?
Enter your findings step by step — live differential, management pathway, and a copy-ready report built as you go.
1. Rate 2. Rhythm 3. Axis 4. PR 5. QRS 6. QT 7. P waves 8. ST–T 9. Voltage 10. Report
Read It Live →
Compass in ER analyzing an ECG
124 Real Cases
What's your read on this one?
Work real clinical tracings from history to diagnosis — the kind you'll face at 2am, not in a textbook.
Case Preview
65M · Chest pain × 2h · Diaphoretic
HR 92 · BP 104/68 · ST↑ II, III, aVF
Inferior STEMI? RV infarct? Pericarditis?
Open a Case →
Compass teaching atrial fibrillation
74 Live Rhythms
Every arrhythmia. Animated live.
SVT to VFib, heart blocks to BBB — each rhythm plays on a synchronized 12-lead so you recognize the pattern before you see the label.
SVT AFib/AFlutter VT · VFib AV Block BBB WPW ACS Paced
Watch It Beat →
Compass studying ECG flashcards at desk
500+ Patterns
Would you catch this on call?
Board-critical ECG patterns drilled right before you'd forget them. Spaced repetition built for when it counts.
Sample Card · Wellens Syndrome
What ECG finding in V2–V3 predicts critical LAD stenosis even when the patient is pain-free?
Flip for answer · 500+ cards like this
Study Now →
Compass directing a cardiac arrest
VFib · HR: ---
⚠
ACLS Algorithms
Everyone's looking at you.
Interactive decision trees for cardiac arrest, ACLS rhythms, and resuscitation. Practice the algorithm before you're running the code.
Cardiac Arrest Algorithm
Pulseless → VF / VT? → Shock → CPR 2 min → continue...
Open ACLS →
Compass studying for boards
103 Board Questions
Ready for Step 1 & Step 2?
USMLE-style ECG vignettes with teaching points, tracked performance, and spaced-repetition review built for exam day.
Sample Question
ECG: delta waves, short PR. 22F with palpitations. Most feared accessory pathway complication?
A. AV nodal reentry B. VFib via AF C. Complete heart block
Start Drilling →
WHAT RESIDENTS ARE SAYING
“
Finally understood Wenckebach after struggling for two years. The animated 12-lead made it click in under a minute.
SR
Shreya R.
PGY-2 Internal Medicine
★★★★★
“
Used it at 2am post-call to interpret a STEMI. The 10-step method is faster than any app I've tried — and it actually teaches you.
MK
Marcus K.
MS-4, Emergency Medicine
★★★★★
“
The spaced repetition flashcards are exactly what boards prep needed. Went from failing ECG questions to answering them confidently.
AL
Aisha L.
MS-3, preparing for Step 2
★★★★★
Daily Challenge
One ECG question. Once a day. Same for everyone.
No account needed — build a streak, share your result.
Resets daily · 🔥 Build your streak
Play Today's Challenge →
Case of the Day
All 124 cases →
New case every day · 124 total
Attempt Today's Case →
Reference Tools
Criteria, drugs & electrolytes
Criteria & ScoresSTEMI · Sgarbossa · HEART · TIMI Drug EffectsQT, digoxin, TCAs, antiarrhythmics ElectrolytesK⁺, Ca²⁺, Mg²⁺ — live morphology
Compass welcoming you
Your journey starts here
Ready to read ECGs
with confidence?
74 animated rhythms. 124 real cases. A 10-step method that works at 2am or on boards. Free to start — no credit card needed.
Create Free Account → Explore First
FAQ
Is EKG Compass free?
Yes — fully free during the open beta. Every module, all 124 cases, 74 rhythms, 500+ flashcards, and 103 board-style Step 1 questions are accessible with a free account. No credit card, no trial clock.
Is this only for students?
No. The content spans MS1 through attending. Medical students use it to build the foundational method. Residents use the cases for fast clinical pattern recognition. EM attendings use the Heart Viz and differentials as a reference when something looks unusual.
Can I use this to study for USMLE / boards?
Yes. The Step 1 Q Bank has 103 USMLE-style ECG vignettes targeting Step 1 mechanisms and recognition. The cases and flashcards cover Step 2 CK and ACLS-level content with spaced-repetition scheduling. The library covers every high-yield pattern. Learners use EKG Compass as dedicated ECG prep before Step 1, Step 2 CK, and EM shelf exams.
The Team
Dr. Chenna Tera
Dr. Chenna Tera
CLINICAL LEAD
PGY-3
Internal Medicine
Dr. Ramya
Dr. Ramya
MBBS
GMC
Raghava Reddy Tera
Raghava Reddy Tera
Software Engineer
Development
Naresh Reddy Maligireddy
Naresh Reddy Maligireddy
Software Engineer
Development
Author: Dr. Chenna Reddy Tera, MBBS · Internal Medicine PGY-3
References: 2025 ACC/AHA ACS Guidelines · AHA/HRS ECG Standardization · Sgarbossa Criteria (NEJM 1996) · de Winter (NEJM 2008) · Wellens Syndrome (Am Heart J 1982)
Educational tool only — not for independent clinical decision-making
@ekgcompass · EKG Compass
Create Free Account → Start interpreting ECGs