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
OakWell: Health Guard
Health Monitoring, Simplified.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.6
2,377 ratings · Top 15%
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 included15 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 OakWell: Health Guard: 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
Implement real-time syncing using Supabase.
Assumption to check: Data synchronization issues between devices
Validate with people who use this workflow before building.
Hypothesis 2
Offer a broader range of customizable activity types.
Assumption to check: Limited activity types
Validate with people who use this workflow before building.
Hypothesis 3
Introduce gamification and social challenges to keep users motivated.
Assumption to check: User engagement drops after initial use
Validate with people who use this workflow before building.
Hypothesis 4
Integrate a food database API for easier meal logging.
Assumption to check: Difficulties in logging meals accurately
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
Health Monitoring, Simplified. OakWell is a risk-focused health guard for people who care about daily health stability rather than a strong body. It uses Apple Watch data to turn complex signals into calm, easy-to-understand summaries — so users and families can see what deserves attention today. Why OakWell is different from general health monitoring apps： - Effortless Visibility: Large typography, high-contrast dark mode, and simplified layouts tailored for aging eyes. - What to focus on today: You don't need to check every number. OakWell intelligently highlights only the metrics that need your immediate attention - Trend-first insights: 14-day trend views that help spot gradual changes over time, not just single readings. - Health Timeline: A unique way to review history. Each day shows a daily status summary and the top 3 metrics to watch. Tap any date to see a "Key Moments" replay—understanding exactly when your health metrics changed during the day. Key features - Continuous Apple Watch-based monitoring - 14-day trend charts across key signals - Simplified statuses instead of overwhelming raw numbers - No social feeds, no gamification, no distractions Note: OakWell relies on Apple Watch data. It is for informational purposes only and is not a medical device. It does not provide medical advice or diagnosis. Learn More: Privacy Policy: https://www.coreloop.pro/privacy-policy Terms of Use: https://www.coreloop.pro/terms-of-use Any Questions? You can send an email to [email protected]
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
react-navigation
expo-axios
BUILD KIT DIFFICULTY
Starter
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.
