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
Cardiac Alarm
An extra layer of awareness for your heart during rest and sleep.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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/
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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 Cardiac Alarm: 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 reliable push notifications with customizable thresholds.
Assumption to check: Inconsistent notifications for heart rate irregularities
Validate with people who use this workflow before building.
Hypothesis 2
Add detailed analytics and historical data visualizations.
Assumption to check: Limited user feedback on heart health trends
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI with a more minimalist design approach.
Assumption to check: User interface may 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
An extra layer of awareness for your heart during rest and sleep. Cardiac Alarm is a standalone Apple Watch app engineered to provide an additional layer of monitoring for individuals tracking specific heart rate trends. It is designed to notify family members when a critical pulse reading is detected, offering added support for you and your loved ones during your quietest hours. How it works. When a monitoring session is active, the app tracks heart rate data via the Apple Watch sensors. If the system detects a heart rate below the fixed 33 BPM threshold or a loss of signal, it triggers a high-volume siren. This alert is specifically designed to be loud enough to notify those in your immediate surroundings so that support can be initiated if necessary. Who is it for. Cardiac Alarm is a tool for individuals interested in maintaining a high level of awareness regarding their heart rate trends. While it is a wellness tool, it provides a valuable supportive layer for those who wish to stay informed about their cardiac data during rest or sleep. IMPORTANT: Best-Effort Tool & Limitations. Cardiac Alarm is a best-effort tool. Due to inherent technical limitations, software errors, or hardware malfunctions, the app does not guarantee the detection of every pulse drop or cardiac event. Monitoring frequency is strictly dependent on Apple Watch sensor availability and hardware performance. The app requires an active monitoring session and firm skin contact (proper device fit) to function. It cannot alert to events that occur between sensor readings or if the system is interrupted by OS constraints or battery depletion. Please Note: Cardiac Alarm is a monitoring and alerting aid only; it does not provide medical treatment, diagnosis, or first aid instructions. It is not a life-saving device and should not be relied upon as the sole monitoring system in life-threatening situations. MEDICAL DISCLAIMER: This app is intended for informational and monitoring purposes only. Cardiac Alarm is NOT a medical device and is not a substitute for professional medical advice, diagnosis, or treatment. The 33 BPM threshold is a fixed safety parameter and cannot be modified. Always consult your cardiologist regarding your health and treatment plan. In case of a medical emergency, contact your local emergency services immediately.
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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.
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BUILD KIT DIFFICULTY
Advanced
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.
