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 National Buoy Data PRO
NOAA National Buoy Data PRO provides real-time marine weather data directly to your device!
$27.99 · In-app purchases
PRICE
$27.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
2 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'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 NOAA National Buoy Data 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
Ensure comprehensive buoy data access across regions
Assumption to check: Limited buoy data coverage in certain areas
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more streamlined design with clear navigation
Assumption to check: User interface may feel cluttered
Validate with people who use this workflow before building.
Hypothesis 3
Offer a free trial or lower-priced options to attract users
Assumption to check: High price point for purchase without trial
Validate with people who use this workflow before building.
Hypothesis 4
Implement real-time updates and notifications for buoy conditions
Assumption to check: Infrequent updates on buoy 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 National Buoy Data PRO provides real-time marine weather data directly to your device! - More than 1.500 weather buoys available (with past data and forecast) - Live Weather Alerts - Search weather buoys by name, description, region, US state, or geolocation (latitude, longitude) GPS location service supported - Save your favorite weather buoys - Setting page to choose your favorite unit of measure - Consult generic forecast map - If offline, lastly available marine observations will always be accessible for every buoy - NO ads Search for weather buoys all over US, Central America, Canada, United Kingdom, Japan and Open Ocean and plan your fishing/sailing/surfing trip! Available weather data: - Current weather conditions - Sunrise and sunset time - Moon phase - Wind direction, wind speed, wind gust - Wave direction, wave height, wave period - Air temperature, atmospheric pressure, dew point - Water temperature - Localize function - Map with buoys - Forecast weather - Past data - Find the nearest buoys according to your current position - Map with significant wave height, dominant wave period and surface analysis. Available Subscription (per device): - Premium (monthly): it adds enhanced features (e.g., continuous updating of new buoys, extra push data, risk of high waves close to favorites buoys, news messages, suggestion of nearby buoys with favorable conditions...). The in-app purchase is valid only on the device where you buy the subscription. IMPORTANT NOTE: With this App we display all the AVAILABLE weather data provided by NDBC - NOAA at each location (buoy station). If you don't see wave height, wind speed, or anything else, please understand it is not our fault but a lack of information at the source. Hence, do not leave (please) a bad review for something we can't fix, as on reviews depends our survival on the market. Contact If you find a mistake or typos in the app or you suggest any improvement or some buoys are missing, please email us at [email protected] with reference NOAA NDBC Buoy Live Marine PRO-iOS. Thanks. --- "Fishes live in the sea, as men do a-land; the great ones eat up the little ones." — William Shakespeare
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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 Native
Expo
react-navigation
axios
react-native-maps
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.
