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
ECG Reports
ECG Reports brings your heart records together in one private, on it's easy to use place.
$2.99
PRICE
$2.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
4 ratings · Below Average
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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.
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 ECG Reports: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
ECG Reports brings your heart records together in one private, on it's easy to use place. Review Apple Watch ECG recordings saved in Apple Health, explore clear waveform charts, and add notes, symptoms, tags, and favorites. The Today dashboard gives you a quick view of your recent records and available heart metrics. Record symptom episodes when they happen, keep a blood pressure history, and log medications. Explore trends based on your own history, see your records together on a timeline, and prepare PDF summaries to discuss with your doctor. Features: • View Apple Watch ECG recordings from Apple Health • Explore ECG waveforms and compare two recordings side by side • Record symptom episodes, notes, and context • Log blood pressure readings and medications • View available heart metrics and personal trends • Organize records with tags, favorites, and a timeline • Create weekly summaries and doctor-ready PDF reports • Export and import a local backup • Use the app in English or Greek ECG Reports is with one time purchase, with no account, subscription, ads, or analytics. Your records are kept on your iPhone unless you choose to export or share them. ECG Reports is for organizing and reviewing information. It is not a medical device, does not diagnose heart conditions, and does not recommend treatment. Speak with a qualified clinician about medical concerns. If you have urgent symptoms, seek medical help immediately.
Written user reviews are not shown here. Check current App Store reviews >
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
Incorporate detailed analytics and trends over time.
Assumption to check: Limited features for tracking historical data
Validate with people who use this workflow before building.
Hypothesis 2
Add features to share reports with healthcare professionals.
Assumption to check: No social sharing options
Validate with people who use this workflow before building.
Hypothesis 3
Enhance UI with modern design and animations.
Assumption to check: User interface could be more engaging
Validate with people who use this workflow before building.
Hypothesis 4
Integrate with HealthKit and Google Fit for better data management.
Assumption to check: Lack of integration with health data platforms
Validate with people who use this workflow before building.
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
Axios
React Navigation
TypeScript
Firebase Storage
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
