App Overview

epTools icon

epTools

Busy Being Born Solutions, LLC · Medical

Trusted for over 15 years by heart rhythm professionals worldwide, epTools is a collection of useful tools for the evaluation of heart rhythm disorders

$19.99 · In-app purchases

PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.8
519 ratings · Top 5%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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A product spec, screen plans, and build steps for your coding agent.

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What's included17 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for epTools: map the core Medical workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Include user-generated tools and calculators to expand offerings.

Assumption to check: Limited tool variety compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Simplify subscription and premium options with clear descriptions.

Assumption to check: In-app purchase confusion

Validate with people who use this workflow before building.

Hypothesis 3

Implement offline functionality for essential tools.

Assumption to check: Lack of offline access

Validate with people who use this workflow before building.

Hypothesis 4

Streamline UI design for better accessibility.

Assumption to check: User interface can feel cluttered

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

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)

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
TypeScript
BUILD KIT DIFFICULTY
Intermediate

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.