# arrhythmia vs PHECC Field Guide App

The clearest difference is rating: PHECC Field Guide App at 5.0 against arrhythmia's 4.2. PHECC Field Guide App also leads on in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.6). arrhythmia's advantage is update cadence (every 3 weeks vs every 19 months) and ratings volume (111 vs 1). On price, ads and device support there is nothing between them.

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

PHECC Field Guide App holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: arrhythmia has 111 ratings behind it against 1, so its average is the more settled of the two.

arrhythmia ships an update every 3 weeks, PHECC Field Guide App every 19 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | arrhythmia | PHECC Field Guide App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/phecc-field-guide-app/id1491341517/reviews)** |
| Number of ratings | **111** | 1 |
| Positive reviews | 43.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Monetization | Subscription | **Free** |
| Best chart rank | **#199** | — |
| Size | 159 MB | 21 MB |
| Requires iOS | 17.6 | **11.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) | [Pre-hospital Emergency Care Council](https://appshunter.io/developer/915358728) |

## What reviewers say

### arrhythmia

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

**Currently charting:** #199 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 |


### PHECC Field Guide App

[App page](https://appshunter.io/ios/app/phecc-field-guide-app/id1491341517)

This medical reference app provides quick access to medication calculations and clinical guidelines for practitioners. It features an age-per-page medication listing, linked CPGs, and pregnancy notes for medications. Designed for field use, it aids in infrequent clinical encounters.

**Highlights:** Medication dose calculator, Age-per-page medication listing, Linked Clinical Practice Guidelines, Medications in Pregnancy notes, Update notifications, Future CPG switching

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is arrhythmia free?

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

### Is PHECC Field Guide App free?

PHECC Field Guide App is free to download, with no in-app purchases.

### Which has better reviews, arrhythmia or PHECC Field Guide App?

PHECC Field Guide App is rated higher. arrhythmia averages 4.2 out of 5 from 111 ratings, while PHECC Field Guide App averages 5.0 from 1 ratings.

### Do arrhythmia or PHECC Field Guide App have ads?

Neither arrhythmia nor PHECC Field Guide App shows ads.

### Which is updated more often, arrhythmia or PHECC Field Guide App?

arrhythmia ships an update every 3 weeks, and PHECC Field Guide App every 19 months. Most recently, arrhythmia was updated on October 17, 2026 and PHECC Field Guide App on October 13, 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.*