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
Earthquake Alert - QuakeRadar
QuakeRadar: Earthquake Alerts & Real-Time Tracking
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
725 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 Earthquake Alert - QuakeRadar: 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 WebSocket for real-time data updates.
Assumption to check: Real-time updating can be unreliable
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set more specific alert criteria.
Assumption to check: Limited customization options for alerts
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI and provide a guided onboarding process.
Assumption to check: Cluttered UI with too many options
Validate with people who use this workflow before building.
Hypothesis 4
Optimize performance for lower-end hardware.
Assumption to check: Inconsistent performance on older devices
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
QuakeRadar: Earthquake Alerts & Real-Time Tracking Stay informed and stay safe with QuakeRadar - your reliable earthquake tracker and early warning companion. Whether you’re a casual user or a safety-conscious traveler, QuakeRadar gives you up-to-date earthquake data from trusted sources like USGS and EMSC. With beautiful maps, detailed stats, and customizable alert settings, you’ll always know when the earth moves. Key Features: - Live Global Earthquake Map. Explore recent seismic activity from around the world, updated in real time. - Personalized Alerts. Get notified when quakes happen near your location. Customize distance, magnitude, and more. - Detailed Earthquake Info. View magnitude, depth, location, time, and region — all neatly organized and localized. - Critical Alerts for Big Quakes. Stay ahead of danger with instant push notifications for major seismic events. - Localized Locations. Smart location normalization and translation for global clarity. - Privacy First. No account required. Optional location access for alerts. QuakeRadar is fast, accurate, and designed for everyone — from everyday users to scientists, travelers, and emergency responders. Some features require a premium subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 Query
Firebase
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.
