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
WIBW 13 Weather app
Get the latest, most-accurate weather forecasts from Northeast Kansas’ #1 weather team
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
8,676 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 included16 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 WIBW 13 Weather app: 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
Offer more detailed radar options and overlays.
Assumption to check: Limited radar features compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Implement reliable and customizable alert notifications.
Assumption to check: Inconsistent notifications for severe weather alerts.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify navigation and provide a more streamlined experience.
Assumption to check: Cluttered user interface with too many options.
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free subscription option with premium features.
Assumption to check: Ads can be intrusive and disrupt the experience.
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
Get the latest, most-accurate weather forecasts from Northeast Kansas’ #1 weather team. Plan your day with a quick glance at your current conditions and what’s in store the next few hours; or plan the week with the extended 10-day forecast. When severe weather strikes, you won’t be caught off-guard thanks to alerts from the 13 NEWS Weather team and the National Weather Service. You’ll be able to track the storm on the interactive radar. Our meteorologists will explain what you can expect during live streams during bad weather and daily quick videos on the sunny days. And it all comes in a clean and easy-to-use design! The WIBW Mobile Weather App includes: • Access to station content specifically for our mobile users • 250 meter radar, the highest resolution available • High resolution satellite cloud imagery • Future radar to see where severe weather is headed • Current weather updated multiple times per hour • Ability to add and save your favorite locations • Daily and Hourly forecasts updated hourly from our computer models • A fully integrated GPS for current location awareness • Opt-in push alerts to keep you safe in severe weather • Severe weather alerts from the National Weather Service
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
axios
react-navigation
react-native-maps
@react-native-community/async-storage
BUILD KIT DIFFICULTY
Advanced
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.
