App Overview

Buoy Map icon

Buoy Map

Joel Lisenby · Weather

Buoy Map puts live NOAA National Data Buoy Center (NDBC) observations on a worldwide map of ocean and lake stations.

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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

Make this idea yours

A product spec, screen plans, and build steps for your coding agent.

First kit free with a verified email

Add to a Remix

Combine features and design from your favorite apps.

Kit ready. Verify your email to download it.

What's included14 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.

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.

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.

JavaScript is required to complete mailbox verification.

Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Buoy Map: map the core Weather workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

Preview ready. Verify your email to reveal and copy the full prompt.

JavaScript is required to complete mailbox verification. Return to this prompt preview.

Continue in Rork copies the full prompt to your clipboard first, then opens Rork in a new tab.

Continue in Rork >

Affiliate link: CloneChart may earn a commission at no extra cost

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

Aggregate data from multiple buoy services for comprehensive coverage.

Assumption to check: Limited buoy data sources

Validate with people who use this workflow before building.

Hypothesis 2

Implement offline caching for buoy data.

Assumption to check: No offline access

Validate with people who use this workflow before building.

Hypothesis 3

Provide clearer value propositions for premium features.

Assumption to check: In-app purchase clarity

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to switch between different measurement units easily.

Assumption to check: Single unit of measurement

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

Buoy Map puts live NOAA National Data Buoy Center (NDBC) observations on a worldwide map of ocean and lake stations. Tap a buoy to see what that station is actually reporting right now. Conditions typically update about every 30 minutes, depending on the station. WHAT YOU GET • Interactive map of NOAA / NDBC buoys around the world • Opens near your location on first launch • Remembers your last map view, including pan and zoom • Keeps the last loaded map if you lose signal, so you can still check what you already loaded when offline • 72-hour wave height graph when the station reports wave data • Light and dark map themes BUOY DATA Each station has a different set of instruments, so not every buoy reports every field. When the data is there, Buoy Map can show: • Wind direction, speed, and gusts • Wave height, dominant period, average period, and wave direction • Air pressure and pressure trend • Air temperature and water temperature • 72-hour wave height graph WHO IT’S FOR Surfers, sailors, fishers, paddlers, and anyone who wants a quick look at real water conditions before heading out or while already on the water. No account. No feed of extra forecasts mixed in. Just the buoy map and the observations. CREDITS Map tiles: OpenStreetMap. Map engine: Leaflet. Suggestions are welcome. I plan to keep improving Buoy Map, enjoy! Together with the promotional text, that should fill both App Store Connect fields. I can also write a 30-character subtitle if you want one.

Written user reviews are not shown here. Check current App Store reviews >

Screenshots

< Scroll to see more >

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
Supabase
react-native-maps
axios
zustand
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.