# LC vs arrhythmia

The clearest difference is rating: arrhythmia at 4.2 against LC's 3.7. arrhythmia also leads on update cadence (every 3 weeks vs every 43 months). LC's advantage is in-app purchases (none vs 3) and iOS requirement (9.0 vs 17.6). On price, review sentiment, ratings volume and ads there is nothing between them.

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

arrhythmia holds the better App Store score, 4.2 against 3.7. Both are backed by a comparable volume of ratings — 41 and 111 respectively. Written reviews split almost evenly too, at 44% and 44% positive.

LC ships an update every 43 months, arrhythmia every 3 weeks. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | LC | arrhythmia |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (41 ratings)](https://appshunter.io/ios/app/lc-ready/id588436223/reviews) | **[4.2 (111 ratings)](https://appshunter.io/ios/app/arrhythmia/id996560473/reviews)** |
| Number of ratings | 41 | **111** |
| Positive reviews | 43.8% of reviews | **43.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 43 months | **Every 3 weeks** |
| Monetization | **Free** | Subscription |
| Size | 49 MB | 159 MB |
| Requires iOS | **9.0** | 17.6 |
| Devices | iPhone, iPad, iPod | 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

### LC

[App page](https://appshunter.io/ios/app/lc-ready/id588436223)

Access your existing study programs with interactive tools like flashcards, practice questions, and exams. Engage with fellow students on a study wall and stay updated with a custom news feed. Progress syncs across devices.

**Highlights:** Study cards, Practice review questions, Practice examinations, Detailed rationale answers, Study wall for peer communication, Cross-device progress syncing, Custom EMS news feed

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

**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 |


## Frequently asked questions

### Is LC free?

LC 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, LC or arrhythmia?

arrhythmia is rated higher. LC averages 3.7 out of 5 from 41 ratings, while arrhythmia averages 4.2 from 111 ratings.

### Do LC or arrhythmia have ads?

Neither LC nor arrhythmia shows ads.

### Which is updated more often, LC or arrhythmia?

LC ships an update every 43 months, and arrhythmia every 3 weeks. Most recently, LC was updated on October 15, 2026 and arrhythmia 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.*