# ACLS Review vs arrhythmia

The clearest difference is price: arrhythmia at Free against ACLS Review's $5.99. arrhythmia also leads on rating (4.1 vs 2.6) and update cadence (every 3 weeks vs every 8 months). ACLS Review's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

arrhythmia is free to download; ACLS Review costs $5.99 up front. arrhythmia sells 3 in-app purchases, starting at $2.99 per month. ACLS Review asks for nothing beyond the download.

arrhythmia holds the better App Store score, 4.1 against 2.6. That said, the two scores are not equally well evidenced: arrhythmia has 113 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 25% of ACLS Review's written reviews are positive against 44% of arrhythmia's.

ACLS Review ships an update every 8 months, arrhythmia every 3 weeks. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | ACLS Review | arrhythmia |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/acls-review/id441526222/reviews) | **[4.1 (113 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** |
| Number of ratings | 5 | **113** |
| Positive reviews | 25.0% of reviews | **43.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 weeks** |
| Monetization | **Paid** | Subscription |
| Best chart rank | — | **#198** |
| Size | 51 MB | 159 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 17+ | 17+ |
| Developer | [Limmer Creative](https://appshunter.io/developer/387423724) | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) |

## What reviewers say

### ACLS Review

[App page](https://appshunter.io/ios/app/acls-review/id441526222)

Prepare for your ACLS certification or renewal with realistic practice exams and study cards. This app offers scenario-based questions, detailed rationales, and integrated ECG strips based on the latest American Heart Association guidelines. Track your progress and share scores with others.

**Highlights:** Realistic practice exams, Scenario-based questions, Detailed rationale answers, Integrated ECG strips, Unlimited exam retakes, Study cards for key topics, Score history tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### arrhythmia

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

**Currently charting:** #198 Top Grossing · Medical (US App Store)

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


## Frequently asked questions

### Is ACLS Review free?

ACLS Review costs $5.99, with no in-app purchases.

### Is arrhythmia free?

arrhythmia is free to download, with in-app purchases available.

### Which has better reviews, ACLS Review or arrhythmia?

arrhythmia is rated higher. ACLS Review averages 2.6 out of 5 from 5 ratings, while arrhythmia averages 4.1 from 113 ratings.

### Do ACLS Review or arrhythmia have ads?

Neither ACLS Review nor arrhythmia shows ads.

### Which is updated more often, ACLS Review or arrhythmia?

ACLS Review ships an update every 8 months, and arrhythmia every 3 weeks. Most recently, ACLS Review was updated on October 29, 2026 and arrhythmia on October 26, 2026.

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