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
Rainbow Plate
Rainbow Plate is a simple plant diversity tracker for everyday eating.
$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 included14 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 Rainbow Plate: map the core Food & Drink 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
Provide extensive meal customization and diverse options.
Assumption to check: Limited meal variety and customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement a clear pricing model with tiered plans and benefits.
Assumption to check: Unclear subscription pricing structure
Validate with people who use this workflow before building.
Hypothesis 3
Optimize backend services and caching mechanisms for better performance.
Assumption to check: Slow app performance during peak times
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate a help center and chat support for instant assistance.
Assumption to check: Inadequate customer support options
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
Rainbow Plate is a simple plant diversity tracker for everyday eating. The app is designed to help you track the variety of the plant-derived foods you eat. Eat the rainbow, includes fruits, vegetables, nuts, seeds, legumes, pulses, whole grains, herbs and other plant-based ingredients; to make everyday eating more varied, colorful, flavorsome and delicious. Each different plant food you eat can be added to your list. Rainbow Plate tracks the diversity of plant foods you already enjoy, while encouraging you to add a few more along the way. Features: Track fruits, vegetables, nuts, seeds, grains, legumes, pulses, wholegrains and herbs Discover your eating patterns and over time enjoy more colourful and varied meals Fully private - all information is stored on your device Rainbow Plate tracks your plant variety over a seven-day period. At the end of each week, the current tracker resets so you can start fresh, and your completed week is archived in your history.
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
React Query
Zustand
React Navigation
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.
