LC vs arrhythmia
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
LC
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.
- Study cards
- Practice review questions
- Practice examinations
- Detailed rationale answers
- Study wall for peer communication
- Cross-device progress syncing
- Custom EMS news feed
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This app is designed to give existing LC-Ready users access to their programs via this fully functional app. You will be able to use study cards, practice with review questions, take practice examinations, and see our industry-leading detailed rationale answers all within the LC-Ready app. The app also provides full access to our unique study wall feature which gives students the ability to communicate and study together on the fly. User’s progress history and mastered items are carried seamlessly between this app and other devices used for study. If you take a practice exam on your phone, you will also see the results on your computer. As a special feature available only on the LC-Ready app, users can view a custom news feed from EMS internet leader EMS1.com targeted specially for EMS students and practitioners. Keeping up with the latest news and trends is a vital part of an EMS provider’s responsibility. The LC-Ready app makes it that much easier. NOTE: This app provides functionality only to users of Limmer Creative’s LC-Ready programs. Users of apps purchased on the iTunes store will continue to access their programs through those individual apps.
arrhythmia
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.
- EKG interpretation practice
- Lead II simulation
- Study Mode with rhythm selection
- Game Mode for random rhythm identification
- Customizable rhythm sets
- Realistic rhythm variations
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Practice reading EKGs in lead II Basic EKG interpretation is more accurately described as an intermediate level skill that takes time, practice and refreshing. Whether you are a doctor, nurse, EMT or tech your ability to read and pickup on basic EKG changes in real time is essential. Practice with an app that actually looks like what you see at work. Use the app’s ‘Study Mode’ to choose one or multiple rhythms to view and compare. A brief description of each rhythm is provided, you can also pause and restart rhythms. Delete and add specific rhythms as desired. Rates, amplitudes and widths of the rhythms are dynamically set which provides for a more realistic simulation and variation within each type of rhythm. Use the app’s ‘Game Mode’ to challenge yourself to identify rhythms presented randomly in lead II. If desired, you can also custom specify which rhythms to include in the game. Access to Study Mode and Game Mode requires a subscription via in-app purchase. Please Read: The purpose of this app is not to teach basic EKG interpretation but rather to practice basic EKG interpretation. If you don’t know basic EKG interpretation seek out additional resources such as classes, books, online materials and mentors to learn more and further your understanding. Note: The cardiac rhythms presented by the app are simulated approximations. There is NO guarantee to the accuracy of rhythms presented. While accuracy is not guaranteed it is a goal. Please report errors, suggestions or general feedback to: feedback@arrhythmiaApp.com. Arrhythmia uses the standard Apple Terms of Use End User License Agreement (EULA): http://www.apple.com/legal/itunes/appstore/dev/stdeula
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | LC | arrhythmia |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (41 ratings) | 4.2 (111 ratings) — better |
| Positive reviews | 43.8% of reviews | 43.9% of reviews — better |
| Number of ratings | 41 | 111 — better |
| Update frequency | Every 43 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 49 MB | 159 MB |
| Age rating | 17+ | 17+ |
| Developer | Limmer Creative | Single Sail Software, LLC |
Customer experience
LC
arrhythmia
In-app purchases
LC
No in-app purchases
arrhythmia
- Monthly7 Days trial$2.991 Month
- Yearly7 Days trial$19.991 Year
- Unlock All Rhythms (One-time Purchase)$4.99









