# ECG EKG Interpretation Mastery vs ACLSMED Sim

The clearest difference is update cadence: ACLSMED Sim at every 9 days against ECG EKG Interpretation Mastery's every 3 weeks. ECG EKG Interpretation Mastery's advantage is chart position (#157 vs unranked) and iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ECG EKG Interpretation Mastery sells 3 in-app purchases, starting at $9.99 per month and ACLSMED Sim sells 6 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ECG EKG Interpretation Mastery ships an update every 3 weeks, ACLSMED Sim every 9 days. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ECG EKG Interpretation Mastery | ACLSMED Sim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (720 ratings)](https://appshunter.io/ios/app/ecg-ekg-interpretation-mastery/id1143682180/reviews)** | — |
| Number of ratings | **720** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Subscription | — |
| Best chart rank | **#157** | — |
| Size | 132 MB | 69 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | +12 |
| Developer | [Higher Learning Technologies](https://appshunter.io/developer/571804544) | [Mark Daniel Figueroa](https://appshunter.io/developer/1890265406) |

## What reviewers say

### ECG EKG Interpretation Mastery

[App page](https://appshunter.io/ios/app/ecg-ekg-interpretation-mastery/id1143682180)

**Currently charting:** #157 Top Grossing · Medical (US App Store)

Learn to interpret ECGs with this comprehensive app. It offers study materials, practice ECG strips, and essential clinical facts to help you understand abnormal EKGs and master 12-lead interpretations.

**Highlights:** Master ECG interpretation, Comprehensive guides and tips, No more big books, Lead placement diagrams, Dozens of 12-lead ECGs, Practice tools with heart rhythms

**Features:** Apple Wallet, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECG EKG Mastery - 1 Month | $9.99 | per month |
| ECG EKG Mastery - 3 Months | $29.99 | per 3 months |
| ECG EKG Mastery - 12 Months | $74.99 | per year |

**What reviewers like**

- 📚 Simple, easy-to-understand format
- 🎨 Nice graphics and visual presentation
- 📖 Good reference material for EKG basics
- ✅ Comprehensive coverage from basics to advanced levels

**What reviewers complain about**

- 💰 Expensive subscription model ($9.99-$20/month)
- 🔒 Invasive privacy policy collecting personal data
- ⚠️ Automatic charging after free trial without clear warning
- 📝 Limited content - only ~20 note cards
- ❌ Lacks depth and in-depth explanations

**Reported bugs**

- Quiz feature is broken or inaccessible
- Practice questions advertised but cannot be accessed
- Screen not compatible with iPhone X
- App requires email or Facebook login to use
- Paywall prevents access to advertised content

**Requested features**

- Comprehensive practice questions with explanations
- Actual video lessons or detailed tutorials
- Random 12-lead EKG quiz functionality
- Daily tasks and practice questions
- More extensive examples and case studies


### ACLSMED Sim

[App page](https://appshunter.io/ios/app/aclsmed-sim/id6771604723)

**Features:** iPhone Duo support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ACLSMED Pro — Monthly | $19.99 | per month |
| ACLSMED Suite — Monthly | $29.99 | per month |
| ACLSMED Pro — Annual | $99.99 | per year |
| ACLSMED Suite — Annual | $179.99 | per year |
| ACLSMED Pro — Lifetime | $399.99 | one-time |
| ACLSMED Suite — Lifetime | $799.99 | one-time |


## Frequently asked questions

### Is ECG EKG Interpretation Mastery free?

ECG EKG Interpretation Mastery is free to download, with in-app purchases available.

### Is ACLSMED Sim free?

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

### Do ECG EKG Interpretation Mastery or ACLSMED Sim have ads?

Neither ECG EKG Interpretation Mastery nor ACLSMED Sim shows ads.

### Which is updated more often, ECG EKG Interpretation Mastery or ACLSMED Sim?

ECG EKG Interpretation Mastery ships an update every 3 weeks, and ACLSMED Sim every 9 days. Most recently, ECG EKG Interpretation Mastery was updated on November 11, 2026 and ACLSMED Sim on October 31, 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.*