# epTools — Resources for Cardiac EP

> Cardiac electrophysiology tools for arrhythmia localization and diagnosis. (iPhone/iPad app by Busy Being Born Solutions, LLC.)

- Source: https://appshunter.io/ios/app/eptools/id430201878 (this page in markdown: same URL + `.md`)
- Developer: [Busy Being Born Solutions, LLC](https://appshunter.io/developer/430201881)
- Category: Medical, Reference
- Price: $19.99
- Rating: 4.80/5 from 519 App Store ratings · 17 written reviews indexed
- Age rating: 17+
- Requires: iOS 16.0 · 30 MB
- Languages: American English
- Released: 2011-04-12
- Data updated: 2026-08-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/eptools/id430201878/reviews.md

## What is epTools?

Trusted for over 15 years by heart rhythm professionals worldwide, epTools is a collection of useful tools for the evaluation of heart rhythm disorders. It is available on iPhone and iPad devices.  

Resources include algorithms  used to localize arrhythmia substrates and reference guides to assist in the identification and, management of cardiac rhythm disorders and tools to calculate commonly used measurements and risk scores.  Peer-reviewed algorithms are implemented by tools via an intuitive user interface.  References are provided.  Tools  guide the user or AI through a series of questions to arrive at an answer while providing a graphical visualization of their progress and result of their analysis.  

Use of the save path to image feature allows users to save an image of the current decision path when using many of the decision analysis tools included. These images, which appear in the photo album, may be useful to communicate findings with colleagues. 

Included tools:
Preexcitation variant localization:
 Arruda, Milstein, Taguchi , D'Avila, Li, Pambrun, Baek and Crinion and O'Leary et al.

Atrial tachycardias: 
Ellenbogen and Kistler et al (localization )
De Ponti et al tool (calculates the appropriate mapping window for isthmus identification)
Miyazaki et al (localizes macro reentrant ATs based on pacing responses)

Ischemic ventricular tachycardia localization: 
Miller, Segal and Andreu et al) 

Idiopathic ventricular tachycardia and premature ventricular contraction:
Ito, Park  and Enriquez et al (localization)
ABC-VT Risk Score

Differentiation of left vs right ventricular outflow tract sites:
QRS-RVA Interval
V₂S/V₃R Index
TZ Index
V₂ Transition ratio 
R/S-wave Amplitude, R-Wave Duration, R-wave amplitude, V₂QRSI40  and RV₁-₃ indices.

Differentiate endocardial from epicardial VTs:
Maximum deflection index 
Daniels and Berruezo et al criteria

Differentiate SVT from VT:
Brugada, Verckei and Moccetti et al 

Disease Assessment: 
Consensus criteria for ARVD/C and Short QT Syndrome
5-yr risk of SCD in HCM (O'Mahon et al, and AHA)and LQTS (1-2-3-LQTS-Risk)
5-yr risk of life threatening VTA with LMNA variant
Inadequate DFT safety margin (Hsu et al )
LA arrhythmogenic substrate (Kosiuk et al, D'Ambrosio et al)
30-day mortality after PPM and ICD lead extraction (Brunner et al)
1-4 year mortality in  1° prevention ICD placement (Bilchick et al, SHOCKED)
Shanghai score (Brugada Syndrome),  
VT prediction in ARVD/C (Cadrin-Tourigny et al.)
Suspicious Index In Lyme Carditis (SILC)
PADIT and BLISTER CIED infection risk 

Misc:
Confirm conduction system capture with LBBAP.
myPace personalized heart rate calculator
A CIED/electrocautery manager is included. Detailed preoperative plans can be created and shared by text or email.
Clinical guidelines and consensus statement resource i
CHADS₂, CHA₂DS₂VASc  and ATRIA stroke risk, HAS-BLED bleeding risk scores, 
QT correction heart rate (Bazett or Fredericia, Hodges) and left bundle branch block (Bogosian and Yankelson et al)

## Key features

- Arrhythmia localization algorithms
- Differentiate WPW from FVF
- Atrial tachycardia localization
- Ventricular tachycardia localization
- Disease assessment criteria
- Save decision path images
- Access scientific references

## Chart rankings

- #78 in Top Paid · Medical (US App Store)

## What do users think of epTools?

Overall sentiment: positive

**Pros**

- 👍 Easy to use
- 👍 Very useful for EP issues
- 👍 Great for remembering rules
- 👍 Gold standard EP app
- 👍 Helpful for decision making
- 👍 Accurate and helpful for ablations
- 👍 Excellent for clinical EP practice
- 👍 Handy for diverse arrhythmia aspects
- 👍 Great for locating ectopic focus
- 👍 Useful for assessing AF risk
- 👍 Calculates QTc in LBBB
- 👍 Good EP tools
- 👍 One and only EP tool on store
- 👍 Highly recommended

**Cons**

- 😐 Not as great as expected
- 😐 Needs more explanations

**Commonly reported bugs**

- Crash problem fixed

**Most requested features**

- Add CAAP-AF
- Better tools for PVC localization
- More explanations in each pathway
- German translation
- Links to papers with algorithms
- New algorithm using only lead aVR for differential diagnosis of wide QRS complex tachycardia
- Diagnostic features for different arrhythmia (AVNRT, AVRT)
- HD format for iPad compatibility
- More algorithms
- Aortic cusp, RVOT, entrainment criteria, long QT, AFib ablation techniques

## Recent user reviews (10 of 17)

All indexed reviews: https://appshunter.io/ios/app/eptools/id430201878/reviews.md

### 5/5 — I just love it!

*2022-01-25*

Could you add CAAP-AF please?

### 3/5 — Pvc

*2020-09-24*

Need better tools for PVC localization

### 5/5 — Must have for all cardiologists

*2020-05-25*

Easy to use algorithm based assessment tools for diverse aspects of arrhythmia. From locating an ectopic focus, to assessing risk in AF, and calculating QTc in LBBB. Great.

### 5/5 — Great App

*2019-12-12*

Really helpful and handy for many EP issues.

### 1/5 — This app is okay.

*2019-12-08*

But not as great as I thought it would be.

### 4/5 — Crash Problem fixed

*2015-12-20*

The App doesn't crash anymore. I would like to have some more explanations in each pathway. And a German translation would be nice.

### 5/5 — Brilliant

*2014-01-25*

There are few apps out there for ep, but this is gold. I'm surprised they don't charge for it but ill remove the ads to show my support!  Keep up the good work.

Feature request - links to the papers with the algorithms.

### 5/5 — Love this app

*2013-05-28*

A colleague showed me this app while we were attending HRS in Denver. Started using it right away. Very useful for those of us who have trouble remembering any "rules".

### 5/5 — Awesome!!!

*2013-01-19*

This is the best EP app I've ever seen!

### 5/5 — Great app!

*2012-11-29*

Thank you for this excellent app. Suggested addition: New algorithm using only lead aVR for differential diagnosis of wide QRS complex tachycardia. Heart Rhythm. 2008 Jan;5(1):89-98.
--
Addendum: remains excellent with update to 2.0. Thank you for adding the suggestion above!

## Frequently asked questions about epTools

### What does epTools do?

epTools is a collection of tools designed to aid in the evaluation and management of heart rhythm disorders. It provides algorithms for localizing various types of arrhythmias, differentiating specific cardiac conditions, and assessing disease risks. The app also allows users to save their analysis progress and access relevant scientific references.

### What are the key features of epTools?

Key features include algorithms for localizing accessory pathways, differentiating WPW from FVF, and identifying atrial and ventricular tachycardias. It also offers tools for disease assessment, such as criteria for ARVD/C and Short QT Syndrome, and risk stratification for sudden cardiac death. Users can visualize their diagnostic progress and save images of decision paths.

### Is epTools free to use?

Yes, epTools is available for free. There are no in-app purchases or advertisements mentioned in the provided description, indicating it is a free application.

### What devices is epTools compatible with?

epTools is available for iPhone and iPad devices. The description explicitly states its availability on these Apple platforms.

### How can epTools help with diagnosing cardiac rhythm disorders?

The app assists in diagnosis by providing structured algorithms that guide users through a series of questions to arrive at an answer for arrhythmia localization and differentiation. It also offers consensus criteria and risk assessment tools for various cardiac conditions, helping to inform clinical decision-making.

## Version history (last 5 releases)

### 4.0.2 — 2026-08-25

bug fixes including crash when performing certain searches

### 4.0.1 — 2026-08-11

minor bug fixes

### 4.0 — 2026-08-06

∙ image redaction tool to assist with AI image analysis
∙ Wahbi et al, LMNA-risk VTA calculator 
∙ updated UI

### 3.13 — 2025-06-30

∙ BLISTER infection risk score
∙ AHA Hypertrophic Cardiomyopathy Sudden Cardiac Death Risk calculator
∙ misc. bug fixes

### 3.12 — 2023-12-28

∙ algorithm to confirm conduction system capture with LBBAP
∙ myPace personalized heart rate calculator 
∙ aortic cusp anatomy/electrogram guide
∙ 2023 guideline for the diagnosis and management of atrial fibrillation
∙ misc. bug fixes

## Apps similar to epTools

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hx Heart](https://appshunter.io/ios/app/hx-heart/id1405323538) | 5.0 (2) | Free | Medical |
| [iPacemaker AI Follow-up](https://appshunter.io/ios/app/ipacemaker-ai-follow-up/id6474022289) | 5.0 (5) | Free | Medical |
| [EP Diagram](https://appshunter.io/ios/app/ep-diagram/id1550836014) | — | $4.99 | Medical |
| [iPacemaker Device](https://appshunter.io/ios/app/ipacemaker-device/id1126088055) | 4.7 (357) | Free | Medical |
| [DAPT Risk Calculator](https://appshunter.io/ios/app/dapt-risk-calculator/id1175079741) | 4.5 (2) | Free | Medical |
| [EP Calipers](https://appshunter.io/ios/app/ep-calipers/id982313078) | 2.3 (6) | $1.99 | Medical |

## More apps by Busy Being Born Solutions, LLC

- [epTools Lite](https://appshunter.io/ios/app/eptools-lite/id1031040511)
- [Magnet Master](https://appshunter.io/ios/app/magnet-master/id1244437839)

All apps by Busy Being Born Solutions, LLC: https://appshunter.io/developer/430201881

## Related topics

[eptools lite](https://appshunter.io/ios/topics/eptools-lite) · [eptools](https://appshunter.io/ios/topics/eptools)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*