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
Flight Winds
FlightWinds helps pilots make faster, clearer wind decisions before takeoff and before landing.
$3.99 · In-app purchases
PRICE
$3.99
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 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 Flight Winds: map the core Weather 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
Add advanced wind data visualization and historical data.
Assumption to check: Limited functionality and features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more visually appealing and user-friendly design.
Assumption to check: User interface is not very engaging or modern.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate more reliable data sources and improve accuracy.
Assumption to check: Inaccurate data reporting in some regions.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a social aspect where users can share flight experiences or weather reports.
Assumption to check: Lack of community features for users to share experiences.
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
FlightWinds helps pilots make faster, clearer wind decisions before takeoff and before landing. Enter the runway and wind, then instantly see headwind, tailwind, and crosswind components for the runway in use. Set your own configurable wind limits, FlightWinds will clearly show when conditions are inside or outside your preset limitations. FlightWinds keeps the workflow simple: quick input, instant calculations, and an easy-to-read display that support your preflight and pre-landing decision-making. Features: - Instant crosswind, headwind, and tailwind calculations - Dual runway display - Custom takeoff and landing wind limits - Clear warnings when your limits are exceeded - Universal app for iPhone and iPad Built by a Gold Seal FAA Flight Instructor and airline pilot for pilots who want a practical wind tool for everyday flying. Safety Notice: FlightWinds is a supplemental planning aid only. It is not certified flight equipment and must not be used as the sole source for flight planning or operational decisions. Verify all inputs, weather data, calculations, and limitations using current official sources, the applicable AFM/POH, operator procedures, and your own judgment. Weather information may be delayed, incomplete, or unavailable. The pilot in command remains responsible for the safe operation of the flight.
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
Zustand
react-native-maps
expo-location
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.
