# EP Diagram vs EPLog

The clearest difference is price: EPLog at $0.99 against EP Diagram's $4.99. EP Diagram's advantage is update cadence (every 6 weeks vs every 4 months) and device support (3 vs 1). On ads, in-app purchases and iOS requirement there is nothing between them.

EP Diagram costs $4.99 and EPLog $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EP Diagram ships an update every 6 weeks, EPLog every 4 months. The most recent releases landed on September 14, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | EP Diagram | EPLog |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Paid | — |
| Size | 15 MB | 3 MB |
| Requires iOS | **17.6** | 18.1 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [EP Studios](https://appshunter.io/developer/574231798) | [Matthew Segar](https://appshunter.io/developer/1886591457) |

## What reviewers say

### EP Diagram

[App page](https://appshunter.io/ios/app/ep-diagram/id1550836014)

This app simplifies the analysis of electrocardiograms using interactive ladder diagrams. It allows for quick creation of publication-quality diagrams with automatic calculations for measurements and impulse origins. Enhance your understanding of cardiac arrhythmias with this advanced digital tool.

**Highlights:** Interactive ladder diagrams, Automatic calculation of measurements, Impulse origin and block calculation, Customizable ladder templates, Add fibrillation periods, Publication-quality diagrams, Shareable diagrams

**Features:** Vision Pro support

**In-app purchases:** none


### EPLog

[App page](https://appshunter.io/ios/app/eplog/id6760868000)

**In-app purchases:** none


## Frequently asked questions

### Is EP Diagram free?

EP Diagram costs $4.99, with no in-app purchases.

### Is EPLog free?

EPLog costs $0.99, with no in-app purchases.

### Do EP Diagram or EPLog have ads?

Neither EP Diagram nor EPLog shows ads.

### Which is updated more often, EP Diagram or EPLog?

EP Diagram ships an update every 6 weeks, and EPLog every 4 months. Most recently, EP Diagram was updated on September 14, 2026 and EPLog on September 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.*