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.
Send every Apple Health metric you choose to any webhook automatically.
$9.99
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for HealthRelay: Health Webhooks: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Send every Apple Health metric you choose to any webhook automatically. HealthRelay reads the HealthKit data types you enable and delivers them as JSON to any URL you configure: n8n, Zapier, Make, Home Assistant, a Notion or Airtable automation, or your own backend. No middleman servers, no account required your data goes straight from your device to the URL you own. **WHY HEALTHRELAY** **SEND TO ANY WEBHOOK** Configure as many webhook endpoints as you need, each with its own HTTP method, custom headers for auth tokens, and a choice of batched or one-request-per-sample payloads. **TRACK 20+ METRICS** Steps, sleep stages, heart rate and HRV, blood oxygen, blood pressure, glucose, weight, workouts, nutrition, mindful minutes, and more. Toggle each one independently nothing is read unless you enable it. **RUN MULTIPLE WEBHOOKS AT ONCE** Send different metrics to different destinations. Steps to Home Assistant, sleep to Notion, everything to your own dashboard — all from one sync. **AUTOMATE RELIABLE DAILY SYNCS** iOS limits background app refresh, so HealthRelay ships a Shortcuts automation action. Add "Sync Health Data" to a Personal Automation — every morning at 8am, for example — for dependable, scheduled delivery. **RETRY FAILED DELIVERIES IN ONE TAP** Every attempt is logged with full request and response detail, HTTP status, and duration. A failed webhook doesn't mean lost data — retry it with a single tap. **BUILT FOR PEOPLE WHO SELF-HOST AND AUTOMATE** If you run n8n, Home Assistant, or your own scripts and want your health data flowing into them the same way everything else in your stack does, HealthRelay is built for exactly that. **PRIVACY, BY DESIGN** HealthRelay has no backend. Your data goes from your device directly to the URL you configure — never through our servers, because we don't have any. Read access is granted per data type, and you can revoke it anytime in Settings.
Written user reviews are not shown here. Check current App Store reviews >
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
Assumption to check: Limited integration with other health platforms.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User onboarding process is unclear.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of social features for sharing health data.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No clear visualization of health trends over time.
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.