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.
App Overview
Eko: Digital Stethoscope + ECG
The Eko App turns every patient encounter into an early detection opportunity for heart and lung disease
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
10,933 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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Build Kit
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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/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Eko: Digital Stethoscope + ECG: 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
Implement more diverse sharing features to social networks.
Assumption to check: Limited sharing options for recordings
Validate with people who use this workflow before building.
Hypothesis 2
Enable offline mode for recording and playback.
Assumption to check: Requires network connectivity to access features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize audio playback for smoother experience.
Assumption to check: Occasional lag during recording playback
Validate with people who use this workflow before building.
Hypothesis 4
Create a guided onboarding process to improve user understanding.
Assumption to check: User onboarding is unclear
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
The Eko App turns every patient encounter into an early detection opportunity for heart and lung disease. It fits seamlessly into your physical exam workflow when connected to a compatible digital stethoscope. Use the Eko App to: - Flag the presence or absence of murmurs. - Flag the presence of AFib*, tachycardia, and bradycardia. - Listen wirelessly using the Bluetooth-enabled device of your choice. - Record, play back, annotate, and save stethoscope sounds and ECG*. - Build patient profiles to flag changes in a patient’s condition across visits. - Securely store exam recordings for future reference. - Generate and share PDF reports with trusted colleagues or upload to compatible EHRs. - Aid in medical education and patient engagement. *Available with the CORE 500™ Digital Stethoscope. Select features may require a paid Eko+ membership and feature availability may vary by country. Visit ekohealth.com to learn more about compatible devices. Have questions or feedback? Contact us at [email protected]. The Services are for informational purposes only and should not replace advice from a licensed healthcare provider for any medical condition or treatment. Please consult a licensed and qualified health care provider before making any medical decisions. Use of this app is subject to the Apple Media Services Terms and Conditions and Eko’s Terms of Service. Apple Media Services Terms and Conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Eko's Terms of Service: https://support.ekohealth.com/hc/en-us/articles/13156765697563-Terms-of-Service Eko's Privacy Policy: https://support.ekohealth.com/hc/en-us/articles/13156748616731-Privacy-Policy
Written user reviews are not shown here. Check current App Store reviews >
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
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BUILD KIT DIFFICULTY
Expert
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.
