# arrhythmia vs Paramedic PASS

The clearest difference is price: arrhythmia at Free against Paramedic PASS's $37.99. arrhythmia also leads on rating (4.1 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 (#33 vs unranked). On ads, device support and iOS requirement there is nothing between them.

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.

arrhythmia holds the better App Store score, 4.1 against 3.1. That said, the two scores are not equally well evidenced: arrhythmia has 113 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 44% of arrhythmia's written reviews are positive against 33% of Paramedic PASS's.

arrhythmia ships an update every 3 weeks, Paramedic PASS every 6 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | arrhythmia | Paramedic PASS |
| --- | --- | --- |
| Price | **Free** | $37.99 |
| Rating | **[4.1 (113 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** | [3.1 (10 ratings)](https://appshunter.io/ios/app/paramedic-pass/id1496171381/reviews) |
| Number of ratings | **113** | 10 |
| Positive reviews | **43.9% of reviews** | 33.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | Subscription | **Paid** |
| Best chart rank | — | **#33** |
| Size | 159 MB | 50 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [Limmer Creative](https://appshunter.io/developer/387423724) |

## What reviewers say

### arrhythmia

[App page](https://appshunter.io/ios/app/arrhythmia/id996560473)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $19.99 | per year |
| Unlock All Rhythms (One-time Purchase) | $4.99 | one-time |

**What reviewers like**

- 👍 Great study tool for EKGs
- 👍 Helpful for understanding EKGs
- 👍 Good for practicing rhythm recognition
- 👍 Interactive and colorful design
- 👍 Dynamic testing

**What reviewers complain about**

- 👎 Immediately asks for paid version
- 👎 Missing common and important rhythms
- 👎 Rhythms are unrealistic
- 👎 Cannot try before signing up
- 👎 Clunky and slow horizontal scrolling

**Reported bugs**

- App no longer works after iOS update
- App does not work on Apple Watch

**Requested features**

- Add more common and important rhythms (torsades, WPW, STEMI, accelerated/tachycardic idioventricular, WAP, MAT)
- Option to read as a 12-lead instead of a single rhythm line
- Add variations to rhythms
- Add Left Bundle Branch Block
- Add a 12-lead option


### Paramedic PASS

[App page](https://appshunter.io/ios/app/paramedic-pass/id1496171381)

**Currently charting:** #33 Top Paid · Medical, #190 Top Grossing · Medical (US App Store)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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 4.1 out of 5 from 113 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 October 24, 2026 and Paramedic PASS on October 27, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*