# Napa County EMS vs arrhythmia

The clearest difference is in-app purchases: Napa County EMS at none against arrhythmia's 3. Napa County EMS also leads on rating (4.5 vs 4.1) and iOS requirement (15.0 vs 17.6). arrhythmia's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (113 vs 2). 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. Napa County EMS asks for nothing beyond the download.

Napa County EMS holds the better App Store score, 4.5 against 4.1. That said, the two scores are not equally well evidenced: arrhythmia has 113 ratings behind it against 2, so its average is the more settled of the two.

Napa County EMS ships an update every 4 months, arrhythmia every 3 weeks. The most recent releases landed on November 3, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Napa County EMS | arrhythmia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/napa-county-ems/id658689593/reviews)** | [4.1 (113 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews) |
| Number of ratings | 2 | **113** |
| Positive reviews | — | 43.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 28 MB | 159 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 17+ | 17+ |
| Developer | [Acid Remap LLC](https://appshunter.io/developer/323130617) | [Single Sail Software, LLC](https://appshunter.io/developer/359715495) |

## What reviewers say

### Napa County EMS

[App page](https://appshunter.io/ios/app/napa-county-ems/id658689593)

Access emergency medical protocols offline with quick search and customizable features. Stay updated with the latest guidelines and easily access important contacts and notes.

**Highlights:** Offline protocol access, Indexed lookup, Search titles and text, Favorites tab, Customizable contacts and mapping, Customizable notes

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Napa County EMS free?

Napa County EMS is free to download, with no in-app purchases.

### Is arrhythmia free?

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

### Which has better reviews, Napa County EMS or arrhythmia?

Napa County EMS is rated higher. Napa County EMS averages 4.5 out of 5 from 2 ratings, while arrhythmia averages 4.1 from 113 ratings.

### Do Napa County EMS or arrhythmia have ads?

Neither Napa County EMS nor arrhythmia shows ads.

### Which is updated more often, Napa County EMS or arrhythmia?

Napa County EMS ships an update every 4 months, and arrhythmia every 3 weeks. Most recently, Napa County EMS was updated on November 3, 2026 and arrhythmia on November 1, 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.*