# ECG EKG Interpretation Mastery vs ECG Builder

The clearest difference is update cadence: ECG Builder at daily against ECG EKG Interpretation Mastery's every 3 weeks. ECG EKG Interpretation Mastery's advantage is chart position (#151 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 ECG Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ECG EKG Interpretation Mastery ships an update every 3 weeks, ECG Builder daily. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | ECG EKG Interpretation Mastery | ECG Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (718 ratings)](https://appshunter.io/ios/app/ecg-ekg-interpretation-mastery/id1143682180/reviews)** | — |
| Number of ratings | **718** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Subscription | — |
| Best chart rank | **#151** | — |
| Size | 132 MB | 9 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| 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:** #151 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


### ECG Builder

[App page](https://appshunter.io/ios/app/ecg-builder/id6809634568)

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ECG Builder Pro | $24.99 | 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 ECG Builder free?

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

### Do ECG EKG Interpretation Mastery or ECG Builder have ads?

Neither ECG EKG Interpretation Mastery nor ECG Builder shows ads.

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

ECG EKG Interpretation Mastery ships an update every 3 weeks, and ECG Builder daily. Most recently, ECG EKG Interpretation Mastery was updated on October 24, 2026 and ECG Builder on October 15, 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.*