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
Emergency: Severe Weather App
American Red Cross Emergency App
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
7,658 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/
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 Emergency: Severe 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
Implement real-time notifications and location accuracy improvements.
Assumption to check: Users report alerts being delayed or inaccurate
Validate with people who use this workflow before building.
Hypothesis 2
Expand safety tips section with detailed guides and multimedia content.
Assumption to check: Limited safety tips for various conditions
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize alert types and severity levels.
Assumption to check: Lack of customization options for alerts
Validate with people who use this workflow before building.
Hypothesis 4
Create a simplified view for critical alerts and instructions.
Assumption to check: Overwhelming information during severe weather
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
American Red Cross Emergency App Prepare to protect yourself and your loved ones with expert tips, real-time alerts and easy-to-use tools. Extreme weather and disasters are happening more often. The Emergency app helps you stay safe before, during and after a disaster. With the Emergency app, you can: • Get prepared with short guides, interactive games and personalized checklists • Receive official National Weather Service (NOAA) alerts right on your phone • Use real-time weather maps and hurricane tracking • Find help after a disaster by locating Red Cross shelters and services The Emergency app is free, available in English and Spanish and works with your phone’s built-in accessibility features. Key Features Real-Time Severe Weather Alerts • Get official NOAA alerts when severe weather threatens your area • Receive notifications for tornadoes, hurricanes, floods, severe thunderstorms and more • Customize alerts by location and hazard type Extreme Weather and Hazard Monitoring • Track major weather events in your area • Monitor hurricanes, floods, tornadoes and other hazards • Get real-time updates to help you stay informed and safe Live Alerts and Storm Tracking • Follow storm paths as weather changes • View live weather maps, including Doppler radar More Than a Weather App • Find open Red Cross shelters and disaster services sites with an interactive map • Prepare with step-by-step guides and personalized checklists • Designed with accessibility in mind, and is compatible with your phone’s built-in assistive technologies • Free and available in English and Spanish Get the all-hazards app you can trust. Download the Red Cross Emergency app today.
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
Firebase
@react-navigation
react-native-maps
axios
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.
