EP Diagram vs EPLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EP Diagram
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.
- Interactive ladder diagrams
- Automatic calculation of measurements
- Impulse origin and block calculation
- Customizable ladder templates
- Add fibrillation periods
- Publication-quality diagrams
- Shareable diagrams
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EP Diagram is a teaching and learning tool for the analysis of electrocardiograms using ladder diagrams. Ladder diagrams are a classic method of analysing heart rhythms and conduction disturbances. The ladder is divided into anatomic regions and lines are drawn indicating conduction. EP Diagram goes much further than the traditional ladder diagram drawn by hand. Using it you can easily and quickly draw publication quality ladder diagrams which are interactive, scrollable, and zoomable. You can style these diagrams as you wish, have measurements, impulse origin, and block calculated automatically, and can edit and create your own ladders templates. You can even add periods of fibrillation with just one finger tap. Diagrams are automatically saved as files and can be shared with others. EP Diagram will improve your understanding of cardiac arrhythmias.
EPLog
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EPLog is a personal case logging app for electrophysiology procedures. Track ablations, device implants, and cardiovascular interventions with detailed procedural data, CHA₂DS₂-VASc scoring, and PDF case report export.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | EP Diagram | EPLog |
|---|---|---|
| Price | $4.99 | $0.99 — better |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 6 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.6 — better | 18.1 |
| Further details — not scored | ||
| Size | 15 MB | 3 MB |
| Age rating | 12+ | 4+ |
| Developer | EP Studios | Matthew Segar |
In-app purchases
EP Diagram
No in-app purchases
EPLog
No in-app purchases
