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
Gout Diet Purine Food Tracker
Living with gout or high uric acid? PurineLog helps you eat smarter every day
$1.99 · In-app purchases
PRICE
$1.99
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
Preview a sample Build Kit No email needed
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 Gout Diet Purine Food Tracker: 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
Enhance food database with user contributions and community suggestions.
Assumption to check: Limited food database and tracking capabilities.
Validate with people who use this workflow before building.
Hypothesis 2
Incorporate AI-driven suggestions based on user data.
Assumption to check: Lack of personalized dietary recommendations.
Validate with people who use this workflow before building.
Hypothesis 3
Add social features to share progress and challenges.
Assumption to check: No social sharing features for motivation.
Validate with people who use this workflow before building.
Hypothesis 4
Implement a faster food logging mechanism with barcode scanning.
Assumption to check: Inadequate user interface for logging food quickly.
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
Living with gout or high uric acid? PurineLog helps you eat smarter every day. Look up purine levels in thousands of foods, log meals, and see how your daily intake adds up—no account required. Track uric acid readings over time, log water and medications, and spot trends before a flare hits. Low-purine recipes and clear health articles keep you informed without the guesswork. • Food library with purine lookup and compare • Meal diary with daily purine totals • Uric acid log with charts and trends • Water intake and medication reminders • Low-purine recipes and health articles • Custom foods, favorites, offline storage Your data stays on your device. Private, simple, built for gout and hyperuricemia management. Medical Disclaimer: This app is for informational and dietary tracking purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek a doctor's advice in addition to using this app and before making any medical decisions.
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
Zustand
axios
react-navigation
react-native-paper
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.
