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
Earthquakes Pro
earthquake! is a quake application that based on multiple data sources.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
9 ratings · Top 50%
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 Earthquakes Pro: 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
Integrate multiple data sources for comprehensive coverage.
Assumption to check: Limited data sources for earthquake information
Validate with people who use this workflow before building.
Hypothesis 2
Provide customizable alert settings for users.
Assumption to check: Inconsistent notifications for alerts
Validate with people who use this workflow before building.
Hypothesis 3
Implement filter options to adjust displayed earthquake data.
Assumption to check: Visual clutter on the map view
Validate with people who use this workflow before building.
Hypothesis 4
Enhance detail screens with historical data and impact analysis.
Assumption to check: Lack of detailed information for recent earthquakes
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
earthquake! is a quake application that based on multiple data sources. with this app, you can get the latest earthquake info immediately from all over the world. also, you can search the earthquakes occurred in the past. main features: - 23 earthquake data sources, covers the frequent occurrence of the earthquake area in the world. * [usgs] u.s.geological survey * [emsc] eu mediterranean earthquake centre * [ceic] china earthquake center * [gfz] ger potsdam earthquake center * [cwb] taiwan central weather bureau * [jma] japan meteorological agency * [ingv] italy geophysics institute * [bgs] british geological survey * [chi] chile earthquake center * [tur] turkish disaster and emergency center * [irsc] iranian seismological center * [can] natural resources canada * [aus] geoscience australia * [nzl] new zealand earthquake commission * [phivolcs] philippine institute of volcanology and seismology * [rou] romanian national institute for earth physics * [ovsicori] costa rica, the national university * [bmkg] indonesia the meteorology, climatology, and geophysics * [igepn] instituto geofísico - ecuador * [ign] spain instituto geográfico nacional * [imo] icelandic met officessn méxico servicio sismológico nacional * [ssn] méxico servicio sismológico nacional * [india] india national center for seismology * [bmkg] indonesia the meteorology, climatology, and geophysics - real-time push notification of earthquake over 4.0 magnitude. - customize your notifications by magnitude,"receive time" and distance threshold , easy to use. - filter earthquakes by magnitude/region/depth. - perfect real-time algorithm to achieve all of the data source unified display (non-duplication of data), data source select "all". - support detail information display. - full gmap integration. - provide a uniform view shows the same earthquake of different sources. - provide historical data with earthquake in 300 km range. - the global (worldwide) search, support magnitude, time interval and depth, with flexible sort. - sharing detailed screenshots of maps and vital details to anyone by facebook/twitter/e-mail... - support epicentral distance (gps positioning or custom) - mass historical data. - support for personal collection. - "pull to load more data" in the list tab. - view details on source site. - applications built-in web browser support.
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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 Navigation
React Native Maps
Axios
Zustand
Expo Location
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.
