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
NOAA Marine Forecast & Weather
NOAA Marine Forecast Reports
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
4,928 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.
Build your own version
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/
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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 NOAA Marine Forecast & 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
Implement real-time data fetching for current conditions.
Assumption to check: User complaints about slow updates on weather data.
Validate with people who use this workflow before building.
Hypothesis 2
Introduce better sorting/filtering options for alerts.
Assumption to check: Difficulty in navigating through alerts.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize alert types and notifications.
Assumption to check: Limited customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline caching of weather data.
Assumption to check: Lack of offline access to previously viewed data.
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
NOAA Marine Forecast Reports Simply tap anywhere on the map and view NOAA's spot specific point marine weather forecast. NOAA Marine Forecast Includes: + Spot specific forecasts + Weather, sky, wind, waves + Severe weather advisories + Offshore zone synopsis & forecast NOAA Tide Forecast + Hourly tides + Interactive graphs Forecast coverage includes all National Weather Forecast (NWS) regions: - East & West Coast - Great Lakes - Gulf of Mexico - Florida - Hawaii - Alaska - Puerto Rico It's so simple and fast to use, that there is no need for saving favorites. However, the app will automatically save your most recently viewed forecast for future viewing. ** Available for iPhone & iPad with single purchase** Feel free to contact me at [email protected] if you have any questions before purchasing. Enjoy.
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.
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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.
