Comparison

arrhythmia vs Paramedic PASS

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

Paramedic PASS

Prepare for your NREMT certification exam with this comprehensive app. It features over 550 review questions, detailed rationales, and two full-length simulated exams to help you master critical paramedic knowledge and clinical judgment scenarios.

Highlights
  • Over 550 review questions
  • Detailed rationales for each question
  • 10 key topic areas covered
  • Two full-length simulated exams
  • NREMT clinical judgment scenarios
  • TEI questions
Features
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Paramedic PASS – The Ultimate NREMT Prep App Prepare confidently and increase your chances of passing the NRP on your first attempt with Paramedic PASS, the most comprehensive paramedic certification prep app available. Developed in collaboration with Bill Brown, former Executive Director of the NREMT, this app is designed to help you master the latest exam format. Stay ahead with new NREMT clinical judgment scenarios and TEI questions, reflecting the evolving NRP exam standards. These questions will train your brain to think critically, just like the National Registry requires. Get access to over 550 high-quality review questions covering the critical areas of paramedic knowledge, all with detailed rationales to reinforce your learning. Study smarter with questions organized into 10 key topics, including: Airway, Oxygen, and Ventilation Cardiology Trauma (Head, Neck, Chest, Ortho, Burns & More) OB and Pediatrics Pharmacology Respiratory and Neurology Abdominal, Immunology, Infectious Diseases, GU Operations When you're ready to put your knowledge to the test, challenge yourself with two full-length, 100-question simulated NRP exams. These practice tests provide diagnostic feedback to help you identify strengths and areas for improvement. Train your brain, sharpen your skills, and walk into your exam with confidence. Download Paramedic PASS today and take the next step toward your paramedic certification.

Screenshots

arrhythmia4 screens
Paramedic PASS4 screens

Verdict

The call

The clearest difference is price: arrhythmia at Free against Paramedic PASS's $37.99. arrhythmia also leads on rating (4.2 vs 3.1) and update cadence (every 3 weeks vs every 6 months). Paramedic PASS's advantage is in-app purchases (none vs 3) and chart position (#28 vs #188). On ads, device support and iOS requirement 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

arrhythmia is free to download; Paramedic PASS costs $37.99 up front. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. Paramedic PASS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

arrhythmia holds the better App Store score, 4.2 against 3.1. That said, the two scores are not equally well evidenced: arrhythmia has 111 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 45% of arrhythmia's written reviews are positive against 33% of Paramedic PASS's.

UpkeepUpdate frequency

arrhythmia ships an update every 3 weeks, Paramedic PASS every 6 months. The most recent releases landed on September 21, 2026 and September 27, 2026 respectively.

Scorecard8 real differences · 3 level
arrhythmia versus Paramedic PASS: the parameters behind the verdict, then further details
ParameterarrhythmiaParamedic PASS
PriceFree — better$37.99
Rating4.2 (111 ratings) — better3.1 (10 ratings)
Positive reviews45.0% of reviews — better33.3% of reviews
Number of ratings111 — better10
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
Best chart rank#188#28 — better
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.617.6
Further details — not scored
Size159 MB50 MB
Age rating17+17+
DeveloperSingle Sail Software, LLCLimmer Creative

Customer experience

arrhythmia

All ratings111 ratings
Positive80.2%
Neutral4.5%
Negative15.3%
Written reviews40 reviews
Positive45.0%
Neutral7.5%
Negative47.5%

Paramedic PASS

All ratings10 ratings
Positive40.0%
Neutral20.0%
Negative40.0%
Written reviews6 reviews
Positive33.3%
Neutral0.0%
Negative66.7%

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

Paramedic PASS

No in-app purchases

Questions

Is arrhythmia free?
arrhythmia is free to download, with in-app purchases available.
Is Paramedic PASS free?
Paramedic PASS costs $37.99, with no in-app purchases.
Which has better reviews, arrhythmia or Paramedic PASS?
arrhythmia is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while Paramedic PASS averages 3.1 from 10 ratings.
Do arrhythmia or Paramedic PASS have ads?
Neither arrhythmia nor Paramedic PASS shows ads.
Which is updated more often, arrhythmia or Paramedic PASS?
arrhythmia ships an update every 3 weeks, and Paramedic PASS every 6 months. Most recently, arrhythmia was updated on September 21, 2026 and Paramedic PASS on September 27, 2026.
Which is more popular, arrhythmia or Paramedic PASS?
arrhythmia currently peaks at #188 in the App Store charts, and Paramedic PASS at #28. Chart position reflects recent download velocity rather than total install base.

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