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
QuakeFeed Earthquake Alerts
Worldwide earthquake map, alerts, and news
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
100,605 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 QuakeFeed Earthquake Alerts: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Worldwide earthquake map, alerts, and news. The most free features of any earthquake app! +Wildfires, smoke, hurricanes, volcanoes, and more. FREE VERSION INCLUDES: - Nearby earthquake alerts - Customizable regional alerts - 3D globe map - Satellite imagery and streets map - Fault lines map layer - Multiple data sources (USGS, EMSC, NRC) - Search, sort, and filter earthquakes - Links to USGS earthquake event page - Links to PAGER and aftershock forecast - Links to tsunami.gov PREMIUM SUBSCRIPTION INCLUDES: - Removes ads - Wildfires (USA & Canada) - Smoke forecast map layer - MMI Contours (shaking intensity) - Historical earthquake data to 1900 - Eight premium basemaps - Erupting volcanoes - Hurricanes WE RESPECT YOUR PRIVACY: - No ad tracking - No data sharing - Your precise location never leaves your device If you choose to purchase a QuakeFeed Premium Subscription, payment will be charged to your iTunes account at confirmation of purchase. The subscription automatically renews unless auto-renewal is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period, for the annual subscription price. Subscriptions may be managed and auto-renewal may be turned off by going to your iTunes Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. Full Privacy Policy and Subscription Terms of Service: http://www.quakefeed.com/privacy/ SUGGESTIONS? QUESTIONS? Contact us at [email protected] or visit http://quakefeed.com -- we usually respond within 24 hrs!
Written user reviews are not shown here. Check current App Store reviews >
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 set specific magnitude thresholds and locations for alerts.
Assumption to check: Limited customization for alert settings
Validate with people who use this workflow before building.
Hypothesis 2
Optimize data fetching to ensure real-time alerts are immediate.
Assumption to check: Occasional lag in real-time updates
Validate with people who use this workflow before building.
Hypothesis 3
Redesign layout for better organization of information and ease of use.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Provide users with more comprehensive historical earthquake data and trends.
Assumption to check: Lack of detailed historical data
Validate with people who use this workflow before building.
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
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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.
