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
FOX 11 Weather
Never let the weather catch you by surprise again
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
8,196 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/
Preview a sample Build Kit No email needed
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 FOX 11 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
Allow users to customize alert types and frequencies.
Assumption to check: Limited customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 2
Offer an ad-free subscription option.
Assumption to check: Ads can disrupt user experience
Validate with people who use this workflow before building.
Hypothesis 3
Enhance location accuracy with user input options.
Assumption to check: Inaccurate location detection sometimes
Validate with people who use this workflow before building.
Hypothesis 4
Include detailed air quality index and health recommendations.
Assumption to check: Limited data on air quality
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
Never let the weather catch you by surprise again. FOX 11's trusted Severe Weather Team delivers Northeast Wisconsin's most accurate hour-by-hour forecast for the next day and for the week ahead. Unlike other weather apps, you'll get a local forecast that is customized for you. Download the FOX 11 Weather app for fast, accurate local and national weather at your fingertips. With its personal alert notifications, you'll know when significant weather is heading your way and when to take cover. While traveling, rely on FOX 11 Weather to get real-time weather forecasts, interactive radar and current conditions for anywhere in the U.S. The FOX 11 Weather app utilizes the most advanced radar maps, weather and digital technology available. With its easy-to-use interactive radar, you can take control and see where the storm is now and where it is tracking. Then, set customized alerts to keep you and your family informed and safe. Features: - Live interactive radar with many layering options lets you track the storms around you - Alerts for severe weather go to your home screen and cue an audio alert - The most accurate hour-by-hour forecast for the next day and week ahead for Northeast Wisconsin - The latest video forecast from the FOX 11 Severe Weather Team - Current weather conditions for Green Bay, Northeast Wisconsin, and anywhere in the United States - Share the weather conditions via text message, email, Facebook, Twitter or our Report It feature - You can set multiple custom locations to track forecasts, alerts, radar, and more
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
expo-location
react-native-maps
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.
