App Overview

Helm WX Marine Weather & Tides icon

Helm WX Marine Weather & Tides

Jeremy Paulus · Weather

Helm WX gives you the marine weather data that actually matters — wind, waves, sea state, and tides together in one clean view

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
1 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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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.

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.

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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 Helm WX Marine Weather & Tides: 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 local caching for offline access.

Assumption to check: Limited offline access to weather data

Validate with people who use this workflow before building.

Hypothesis 2

Centralize notification preferences for better user control.

Assumption to check: Inconsistent notification settings

Validate with people who use this workflow before building.

Hypothesis 3

Offer interactive radar maps with premium access.

Assumption to check: Lack of detailed radar features

Validate with people who use this workflow before building.

Hypothesis 4

Allow users to customize dashboard layout and features.

Assumption to check: No user customization options

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

Helm WX gives you the marine weather data that actually matters — wind, waves, sea state, and tides together in one clean view. Built for boaters, sailors, and anyone who needs to know what the water is doing before they go out. **Live data from real sources** Helm WX pulls directly from NOAA weather stations, offshore buoys, and tide gauges — not a statistical model. You get actual observed conditions from the nearest station to wherever you're headed. **Wind, waves, and tides — together** Most weather apps show you one or the other. Helm WX shows wind speed and direction, wave height and period, sea state, and a full tide chart all on the same screen. Everything you need to make a go/no-go call in one place. **Works anywhere in the world** Enter coordinates, drop a pin on the map, search by city or port name, or tap Use My Location. Helm WX works offshore too — not just coastal areas. **Save your spots** Save up to 10 favorite locations and load them with one tap. Set a default home port and the app knows where to look first. **Daily report notifications** Schedule a morning push notification for your saved location. Know the conditions before you leave the dock. **No subscription. No ads.** Pay once, own it forever. $4.99 gets you the full app with no recurring charges, no data paywalls, and no ads cluttering up your screen while you're trying to read a wind barb. **Data sources:** - NOAA National Data Buoy Center (NDBC) — offshore buoys and coastal stations - NOAA Tides & Currents — 6-minute tide predictions and observations - National Weather Service (NWS) — marine zone forecasts - Open-Meteo — coastal atmospheric conditions - NCEP GFS & WaveWatch III — offshore forecast models

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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
Redux
axios
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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.