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
In Season: Seasonal Produce
In Season is the only seasonal produce guide you’ll ever need
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
5 ratings · Top 5%
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 In Season: Seasonal Produce: 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 detailed descriptions and recipes for each produce item.
Assumption to check: Limited information on seasonal produce may not satisfy all users.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a better favorites management system with tags.
Assumption to check: Users may find it hard to remember their favorites.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to manually select their location.
Assumption to check: Geolocation may not always be accurate.
Validate with people who use this workflow before building.
Hypothesis 4
Offer clear explanations of what users gain from in-app purchases.
Assumption to check: In-app purchases could confuse users.
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
In Season is the only seasonal produce guide you’ll ever need. No subscriptions. No ads. Yours forever—for less than the price of a coffee. Discover what fruits and vegetables are in season right now in your country. Learn about each item’s health benefits, nutritional value, and when it’s at its best—whether it’s early harvest, peak, or late season. Currently supports 17 countries across Europe, North America, and Oceania, including Australia, Belgium, Canada, Cyprus, Denmark, France, Germany, Greece, Hungary, Italy, Japan, Netherlands, Portugal, Romania, Serbia, Spain, Sweden, Switzerland, Türkiye, United Kingdom, and United States. More countries and produce varieties coming soon. Explore produce in its local context, with local names and culturally relevant details to help you connect with food the way people do in each region. Whether you’re shopping, cooking, gardening, or just curious, In Season helps you eat with intention and awareness. Key Features: • Monthly notifications on the 1st of each month • Learn about seasonal produce, health benefits, and nutrition • View local names for fruits and vegetables across regions • Filter to show only local or include imported produce • Browse what’s in season in other countries • See items available year-round • Light, dark, or automatic appearance modes Thoughtfully designed to be fast, distraction-free, and informative. Just seasonal produce, beautifully presented. Have suggestions or feedback? I'd love to hear from you.
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 Navigation
Zustand
Axios
Expo Location
React Native Vector Icons
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.
