Comparison

arrhythmia vs EMScore

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

Head to head
About

arrhythmia

Practice interpreting EKGs in lead II with realistic simulations. Choose rhythms to study or test your knowledge in a game mode. Ideal for healthcare professionals to hone their diagnostic skills.

Highlights
  • EKG interpretation practice
  • Lead II simulation
  • Study Mode with rhythm selection
  • Game Mode for random rhythm identification
  • Customizable rhythm sets
  • Realistic rhythm variations
Currently charting
Read full description

Practice reading EKGs in lead II Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is essential. Practice with an app that actually looks like what you see at work. Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm. Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game. Access to Study Mode and Game Mode requires a subscription via in-app purchase. Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding. Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to: feedback@arrhythmiaApp.com. Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula

About

EMScore

Features
Read full description

EMScore is the essential mobile companion for EMS personnel. Designed for first responders and EMS agencies, EMScore centralizes the tools and information you need in the field. Key Features: - Medical Protocols: Quickly access state and agency-specific treatment protocols with search and filtering - Indication Based Medication Calculator: Weight-based dosing, infusion calculations, and protocol or indication based dosages - Narcotic Logging: Log narcotics across your agency, with easy to use setup and tracking features. - Fleet Management: Vehicle inspections, fuel logs, maintenance tracking, and incident reporting - Station Operations: Chore scheduling, task tracking, and station management - Staff Directory: Find and contact team members instantly - Group Chat: Secure, real-time messaging with your crew and agency - Events & Signups: View upcoming trainings, meetings, and sign up on the go - Dynamic Forms: Complete and submit agency forms digitally - Policy Management: Access your agency's policies and SOPs anytime - Push Notifications: Stay informed with real-time alerts for critical updates - Certification Tracking: Monitor your certifications and expiration dates - Critical Patients: RSI/SAI/MFI patient management with equipment sizing and medication dosing EMScore supports multi role-based access, and data isolation. Whether you're on the truck, at the station, or in the field, EMScore keeps your team connected and informed. Built by EMS professionals, for EMS professionals.

Screenshots

arrhythmia4 screens
EMScore4 screens

Verdict

The call

The clearest difference is in-app purchases: EMScore at none against arrhythmia's 3. EMScore also leads on iOS requirement (15.5 vs 17.6). arrhythmia's advantage is chart position (#188 vs unranked). On price, update cadence, ads 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

Both are free to download. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. EMScore asks for nothing beyond the download.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, EMScore monthly. The most recent releases landed on September 21, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 8 level
arrhythmia versus EMScore: the parameters behind the verdict, then further details
ParameterarrhythmiaEMScore
PriceFreeFree
Rating4.2 (111 ratings) — better—
Positive reviews45.0% of reviews—
Number of ratings111 — better—
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
Best chart rank#188 — better—
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.615.5 — better
Further details — not scored
Size159 MB120 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCEMScore

In-app purchases

3 purchases

arrhythmia

Subscriptions2
  • Monthly7 Days trial$2.991 Month
  • Yearly7 Days trial$19.991 Year
One-time1
  • Unlock All Rhythms (One-time Purchase)$4.99
None

EMScore

No in-app purchases

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is EMScore free?
EMScore is free to download, with no in-app purchases.
Do arrhythmia or EMScore have ads?
Neither arrhythmia nor EMScore shows ads.
Which is updated more often, arrhythmia or EMScore?
arrhythmia ships an update every 3 weeks, and EMScore monthly. Most recently, arrhythmia was updated on September 21, 2026 and EMScore on September 6, 2026.

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