Comparison

ECG Guide vs MD on Call

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

Head to head
About

ECG Guide

This comprehensive reference app provides over 200 high-quality ECG examples and in-depth explanations for medical professionals and students. It offers stepwise interpretation assistance, a large library of common and complex findings, and quiz questions to test knowledge.

Highlights
  • Over 200 high-resolution sample ECGs
  • In-depth reference text on ECG interpretation
  • Stepwise ECG Interpreter assistance
  • Over 100 multiple-choice quiz questions
  • Rapid Reference section for quick interpretation
  • Clear descriptions of arrhythmias and findings
  • Pediatric values included
Features
Currently charting
Read full description

The most comprehensive ECG app in the iPhone App Store - over 200 examples of common and uncommon ECGs iPad version? bit.ly/ECGiPad or search iTunes "ECG Guide iPad" Praise for the ECG Guide: "The best ECG app currently available." -iMedicalApps.com "Core Medical App." - Georgetown Medical School. “This brand-new gem features concise explanations with ample high-quality ECG examples...” - American College of Emergency Physicians “...a 5 star application” - User review “...a must have application for doctors, residents and medical students.” - User review Succinct yet authoritative, this ECG reference is a critical companion for practicing physicians, medical trainees, nurses and paramedics. It is designed as a learning tool for those still training as well as a reliable reference for more experienced interpreters of ECGs. ***************************** Features: - Full reference text that includes in-depth information on topics such as: - Approach to ECG Interpretation - Analysis of rate, rhythm, axis, P wave, QRS complex, ST segment, T wave and QT interval - Ventricular hypertrophy and atrial enlargement - Assessment of ischemia - Approach to arrhythmia - Bradyarrythmias and tachyarrythmias, Heart block, and much more… (content based on national guidelines 2009 AHA/ACCF/HRS Recommendations for the standardization and interpretation of the electrocardiogram) - The largest ECG library available on the iPhone with over 200 high resolution sample ECGs with common and complex findings for easy reference - ECG Interpreter - Stepwise assistance with ECG interpretation. Helps create differential diagnosis based on simple to assess ECG features. - Over 100 multiple-choice quiz questions to test your knowledge - Rapid Reference section - one tap takes you to 11 summary pages used to confidently interpret ECGs - Clear descriptions of both common and complex arrhythmias and ECG findings - Review etiology and differential diagnosis of common and complex arrhythmias and ECG findings - Pediatric values included Compiled and written by Jason Andrade, MD, FRCPC.

About

MD on Call

This app provides quick, practical guidance for physicians, residents, and medical students to manage common on-call issues. It offers concise tips for acute assessment and management, helping users efficiently address patient problems without needing to consult lengthy textbooks.

Highlights
  • Quick assessment and management tips
  • Covers 26 frequent on-call situations
  • Management of common electrolyte abnormalities
  • ECG interpretation with examples
  • Guidance on writing medical orders
  • Searchable by acronyms and keywords
Features
Currently charting
Read full description

"fantastic for a review when rushing to a consult." -- Casey Park MD on Call is already trusted by thousands of physicians, residents and medical students around the world. We’ve been there; At 3 AM, you don’t feel like going through a textbook or a long UpToDate article; you just want to get things done. **************** REVIEWS "If you have ever needed a quick reference to learn on the fly or been stumped by a late night call while cross-covering and you are willing to spend a few dollars to avoid that feeling, you should consider this app." iMedicalApps.com “It has all those handy little things that drug guides and medical references just don’t capture concisely.” “I would pay at least double the cost for this handy little reference.” Dr Jessica Otte, drottematic blog **************** **************** AUDIENCE junior residents, interns and medical students INTRO In medical school, we learn a lot about diseases and the basis for their management. However, we are traditionally less exposed to apparently easy problems like pain, nausea or hypokalemia. Quite often, those issues are brought to the attention of the nursing staff in the evening. At that time, the treating team is away and you're on call, running all over the hospital. MD on Call gives you tips on how to QUICKLY assess and manage (acutely) common problems so you can go on assessing the next patient, or to your room to get some well deserved sleep. -- it is NOT meant to replace a textbook -- FEATURES MD on call is divided into 5 main sections: • Issues • 26 frequent on call situations (including management of some specific conditions) Abdominal Pain* Acute Coronary Syndrome* Agitation / Violence Anaphylaxis Bleeding Bradycardia* Chest Pain Constipation Death (Pronouncing) Decreased LOC Dysuria / UTI* Dyspnea Fever Febrile neutropenia Headache Hypertension Hypotension Insomnia Meningitis Nausea / Vomiting Pain Palliation Pneumonia Seizure Tachycardia Wound Dehiscence Wound Infection • Labs • Common electrolytes abnormalities (including management) Hypo Ca, K, Mg, Na, PO4, glycemia Hyper Ca, K, Na, glycemia • ECG • Normal and abnormal ECG values, now with examples • Misc • Suggestions on how to write orders for admission, "comfort measures only", "on call" notes, OR and procedure notes. Transfusions: general information and common reactions Misc: CSF values, opioid conversion... • Lines and Tubes • How to manage common problems, such as a blocked NG tube. • Search • Search using acronyms or keywords **************** Feedback is more than welcome : visit the website for more details **************** DISCLAIMER This publication (application) is to be used as a guide only. It is intended only for use by licensed medical practitioners and medical students. Every doctor (or prescriber) is responsible for their actions. This guide is not meant to replace clinical judgment. The authors of MD on call make no claims regarding the accuracy of the information contained herein. The authors of this application and its content shall not be liable for any injury and/or damage to persons or property arising from the use of this application. It is the responsible of the licensed prescriber to verify the indications, contraindications and dosage of the medication (and actions) they prescribe.

Screenshots

ECG Guide3 screens
MD on Call4 screens

Verdict

The call

The clearest difference is rating: MD on Call at 5.0 against ECG Guide's 3.6. ECG Guide's advantage is price ($0.99 vs $9.99) and update cadence (every 2 months vs every 4 months). On review sentiment, ads, in-app purchases and monetization model 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

ECG Guide costs $0.99 and MD on Call $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MD on Call holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: ECG Guide has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 76% of ECG Guide's written reviews are positive against 78% of MD on Call's.

UpkeepUpdate frequency

ECG Guide ships an update every 2 months, MD on Call every 4 months. Both last shipped on September 22, 2026.

Scorecard5 real differences · 6 level
ECG Guide versus MD on Call: the parameters behind the verdict, then further details
ParameterECG GuideMD on Call
Price$0.99 — better$9.99
Rating3.6 (8 ratings)5.0 (1 ratings) — better
Positive reviews75.8% of reviews78.1% of reviews — better
Number of ratings8 — better1
Update frequencyEvery 2 months — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#165 — better#173
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better16.0
Further details — not scored
Size26 MB17 MB
Age rating17+17+
DeveloperWebMDMessil inc.

Customer experience

ECG Guide

All ratings8 ratings
Positive62.5%
Neutral12.5%
Negative25.0%
Written reviews132 reviews
Positive75.8%
Neutral7.6%
Negative16.7%

MD on Call

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews64 reviews
Positive78.1%
Neutral10.9%
Negative10.9%

User reviews

ECG Guide

From 8 App Store ratings

What we love

  • 📚 Comprehensive ECG reference material and content
  • 👍 Excellent for medical professionals (doctors, nurses, paramedics, residents)
  • 🎯 Well-organized and easy-to-navigate interface
  • 📊 Large library of high-quality sample ECG strips
  • 🧠 Helpful quiz feature for testing knowledge

Room to improve

  • ❌ Not suitable for general public/non-medical users
  • 🎨 Outdated UI design and appearance
  • 📱 Poor iPad compatibility
  • 🔐 Requires email registration after purchase
  • 💸 Separate purchase required for iPad version

MD on Call

From 1 App Store ratings

What we love

  • 👍 Handy checklist for on-duty
  • 👍 Useful in ER
  • 👍 Great app design
  • 👍 Packed with useful info
  • 👍 Pragmatic content

Room to improve

  • 👎 Could cover more content
  • 👎 Needs update for iPhone X
  • 👎 Content and references outdated
  • 👎 Needs a refresh
  • 👎 More conditions could be added

Bugs and requests

ECG Guide

Reported bugs

7 issues
  • App crashes at startup
  • Incompatible with iOS 4 (fixed in later updates)
  • Incompatible with iOS 11 (64-bit update needed)
  • UI appears blown-up and blurry on iPhone 6+
  • Cannot exit ECG view when rotated sideways
Show 2 more
  • Crashes after OS 3.0 update
  • Incorrect pricing display in some regions

Requested features

14 requests
  • iPad support and optimization
  • Highlight or circle abnormalities on ECG images
  • Search functionality for finding specific content
  • Customizable quiz difficulty levels
  • ACLS algorithms integration
Show 9 more
  • Pediatric reference tables and criteria
  • Arrows and annotations on ECG samples
  • Corrected QT calculator
  • Alternate lead placement information (Fontane, Brugada)
  • Notes and favorites functionality
  • Camera integration to analyze ECG photos
  • Device synchronization between iPhone and iPad
  • More heart block examples
  • Smoother landscape/portrait transitions

MD on Call

Reported bugs

3 issues
  • Incompatible with iPhone X
  • Incorrect advice regarding Metaclopramide
  • Incorrect TDF to morphine conversion data

Requested features

16 requests
  • Cover more content
  • Update for iPhone X compatibility
  • Revise content and references for up-to-date information
  • Add more conditions
  • Include common diseases and treatments
Show 11 more
  • Add an 'edit' function to modify and add vignettes
  • Add more clinical scenarios
  • Add medicine dose information
  • Add drug interaction information
  • Include more information with supporting references
  • More streamlined interface
  • Translate to German
  • Translate to French
  • Add more topics
  • Add more clinical high yields and topics
  • Add more futures needed while oncall

In-app purchases

None

ECG Guide

No in-app purchases

None

MD on Call

No in-app purchases

Questions

Is ECG Guide free?
ECG Guide costs $0.99, with no in-app purchases.
Is MD on Call free?
MD on Call costs $9.99, with no in-app purchases.
Which has better reviews, ECG Guide or MD on Call?
MD on Call is rated higher. ECG Guide averages 3.6 out of 5 from 8 ratings, while MD on Call averages 5.0 from 1 ratings.
Do ECG Guide or MD on Call have ads?
Neither ECG Guide nor MD on Call shows ads.
Which is updated more often, ECG Guide or MD on Call?
ECG Guide ships an update every 2 months, and MD on Call every 4 months. Most recently, ECG Guide was updated on September 22, 2026 and MD on Call on September 22, 2026.
Which is more popular, ECG Guide or MD on Call?
ECG Guide currently peaks at #165 in the App Store charts, and MD on Call at #173. Chart position reflects recent download velocity rather than total install base.

Other comparisons