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Live rhythm simulator
Real monitor. Real rhythms.
27 rhythms on a bedside-style monitor, from normal sinus rhythm to VF, asystole and PEA.
- Variants that matter: AF with RVR, 2:1 to variable flutter, Wenckebach 3:2 to 5:4, Mobitz II, complete block with junctional or ventricular escape, torsades, coarse and fine VF.
- Three leads at once: the best lead for each rhythm, plus two that help confirm it.
- QRS beep and bedside-style monitor alarms.
- Swipe through rhythms, adjust rate and gain, freeze the sweep.
A recording of the app’s three-lead monitor in the Teal dark scheme, sweeping through Wolff-Parkinson-White, third-degree AV block and Mobitz II, with the rate control, teaching notes and heart rate below.
12-lead, STEMI & mimics
See the MI. Name the artery.
Turn sideways for a full 12-lead with 29 ischemia, infarction and mimic patterns, organized by injured wall and likely culprit artery.
- Time-lapse an MI from hyperacute T waves to old Q waves.
- STEMI equivalents: Wellens, de Winter, posterior MI, left main pattern.
- Infarcts hidden by LBBB and pacing (Sgarbossa).
- Mimics side by side: pericarditis, early repolarization, LVH strain, hyperkalemia, Brugada, Takotsubo, PE.
- Right-sided and posterior leads (V4R, V7–V9).
ECG Basics
Beginner to boards.
A 20-chapter book with live strips inside the text, from the conduction system to STEMI equivalents, electrolytes, artifact, running a code, pacemakers and ICDs.
- Short, high-yield chapters. Every rule sits beside a live strip.
- Rate, regularity, P wave, PR and QRS criteria for every rhythm.
- Full-text search.
Adaptive practice
557 questions that adapt to you.
Almost 200 with live strips. Harder as you get them right, easier when you don't.
- Pick your goal and start at your level.
- Your misses come back for review.
- Every answer explains why, with one tap to the strip or the chapter.
A recording of a practice question in a light scheme: Which is a common cause of sinus tachycardia? Blood loss is chosen and marked correct, with a short explanation and a link to Chapter 5.
Practice for your exam
- Just learning ECGs No exam, everything in order
- EMT / AEMT NREMT
- Paramedic NREMT-P
- Nursing NCLEX, PCCN, CCRN, CEN
- ACLS course Rhythm recognition and the algorithms
- Monitor / EKG tech CRAT, CCT, CET
- Physician assistant PANCE, PANRE
- Medical school USMLE Step 1 and 2, shelf exams
Make it yours
Six color schemes. Light and dark.
Classic ECG paper, bedside-monitor green and four more, each with a light and a dark mode. On iPhone and iPad, portrait and landscape. Try them here.
Price & privacy
Free to try. Yours for life.
Bought it before?
Version 5 is unlocked for you at no extra cost.
Private by design
The app has no account, no ads and no tracking. Your progress stays on your device.
About
Written by physicians. On the App Store since 2009.
Instant ECG was written by two anesthesiologists and is developed by iAnesthesia LLC. Built for nursing and paramedic students, EMTs, monitor techs, ACLS candidates, PAs, residents and anyone who wants to read rhythms with confidence.
Updates
Hear about new versions first.
Occasional email about Instant ECG and what's new in each version. No spam, and you can unsubscribe from any email.