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
WDIV 4Warn Weather
The 4Warn Weather app offers a sleek and fluid map displaying real-time radar, temperature, and surface winds
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
33,195 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 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 WDIV 4Warn Weather: 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
Provide more granular control over alert settings.
Assumption to check: Limited customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 2
Utilize multiple data sources for improved accuracy.
Assumption to check: Occasional inaccurate weather data
Validate with people who use this workflow before building.
Hypothesis 3
Implement offline caching for essential weather data.
Assumption to check: Lack of offline functionality
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free subscription tier.
Assumption to check: Ads can be intrusive
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
The 4Warn Weather app offers a sleek and fluid map displaying real-time radar, temperature, and surface winds. Whether you're planning your week or just stepping out for the day, our app provides detailed 48-hour and 10-day forecasts tailored to your specific location, accessible by city, zip code or wherever you are. Key Features of the 4Warn Weather App: - Live From the 4Warn Weather Office: Livestreams of the best meteorologist team, for up-to-the-minute coverage of weather impacting the region and your backyard. - Interactive Weather Maps: Better, more dynamic weather radar that is more interactive and easier to read. - Updates from the WDIV Local 4 Weather Team: Get real-time insight, video forecasts and up-to-date analysis from our dedicated meteorologists - More Detailed Forecasts: Now including windspeed and direction! Get 3- and 10-day forecasts in both quick view and detailed formats, ensuring you're fully prepared no matter the weather. - Live Weather Alerts: Experience integrated weather alerts including tornado likelihood rankings from 1 to 10 for upcoming storm cells. - Customizable Notifications: Choose from WDIV Local 4 weather alerts and National Weather Service warnings for comprehensive alerting including tornadoes, severe thunderstorms and flash floods, directly on your map. - MIPics: Share and view photos and videos from your community and where events are taking place. Nothing is more powerful than the sights and sounds shared by our viewers, far beyond the forecasts and maps. - Dark Mode: A new visual option for easier nighttime viewing. Dark mode is enabled based on your device's settings. Beyond just forecasts, the 4Warn Weather app offers fully automated, specific weather alerts with up to 15 minutes lead time before severe conditions hit. You can set up alerts for up to 16 locations, including your current mobile location, ensuring that you and your loved ones stay safe. Metro Detroit, don't just watch the weather. Stay a step ahead with the 4Warn Weather app. Download or update today, and take control of your weather experience. Your peace of mind is now at your fingertips.
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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
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BUILD KIT DIFFICULTY
Intermediate
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.
