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
HealthPost: Health Webhook API
HealthPost delivers your Apple Health data to the HTTPS endpoints you choose—securely, automatically, and on your terms.
$9.99 · In-app purchases
PRICE
$9.99
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 HealthPost: Health Webhook API: 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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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
Expand webhook support to more health services.
Assumption to check: Limited integration options with other health platforms
Validate with people who use this workflow before building.
Hypothesis 2
Implement a guided tutorial for new users.
Assumption to check: Poor user onboarding experience
Validate with people who use this workflow before building.
Hypothesis 3
Add community challenges or sharing options.
Assumption to check: Lack of social features for motivation
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline data storage and sync when online.
Assumption to check: No offline support for logging health data
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
HealthPost delivers your Apple Health data to the HTTPS endpoints you choose—securely, automatically, and on your terms. Connect webhooks and APIs for personal automation with tools like n8n, Make, Zapier, Home Assistant, or your own backend. If it accepts JSON over HTTPS, HealthPost can send your health updates there. WHAT YOU CAN SYNC • Steps, distance, floors climbed • Active and basal energy • Workouts • Heart rate, HRV, walking heart rate • Sleep (including sleep stages when available) • Blood pressure, blood glucose, blood oxygen, respiratory rate • Weight, BMI, body fat Choose exactly which metrics to enable. HealthPost only reads what you allow. HOW IT WORKS 1. Allow access to the Health data you want delivered 2. Add one or more HTTPS destinations (POST, PUT, or PATCH) 3. HealthPost syncs new samples and sends a clean JSON payload to each enabled destination Sync can run from HealthKit background delivery, manual Sync Now, built-in periodic sync, or the Shortcuts “Sync Health Data” action. BUILT FOR RELIABLE DELIVERY • Send to multiple destinations at once • Automatic retries with backoff on failure • Per-destination auth and custom headers (secrets stored in Keychain) • Full delivery logs with status, timing, and data summaries • Test send before you go live • API-oriented JSON your automations can parse PRIVACY BY DESIGN Your health data stays under your control. HealthPost sends it only to the destinations you configure. There is no HealthPost cloud middleman for your samples—the developer does not receive your health data through this sync flow. IMPORTANT HealthPost is a connectivity utility for delivering Health data you choose to your own endpoints. It is not a medical device and does not provide diagnosis, treatment, or clinical advice. Background delivery works best with Background App Refresh enabled; force-quitting the app can prevent background launches until you open it again. Perfect for builders who want Apple Health flowing into dashboards, home automation, personal databases, and custom APIs—without lock-in.
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
Expo
Supabase
Victory Native
React Navigation
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.
