App Overview

WillyWeather icon

WillyWeather

WillyWeather (AU) Pty Ltd · Weather

YOUR LOCAL WEATHER SERVICE

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.8
22,631 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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Build Kit

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

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Combine features and design from your favorite apps.

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What's included18 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 WillyWeather: 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 more reliable weather APIs with user feedback.

Assumption to check: Inaccurate weather data at times

Validate with people who use this workflow before building.

Hypothesis 2

Provide more granular controls for alerts and notifications.

Assumption to check: Limited customization options for notifications

Validate with people who use this workflow before building.

Hypothesis 3

Redesign UI for better information hierarchy and user focus.

Assumption to check: Cluttered UI with too much information

Validate with people who use this workflow before building.

Hypothesis 4

Offer an ad-free subscription option for a better user experience.

Assumption to check: In-app ads can be intrusive

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

YOUR LOCAL WEATHER SERVICE WillyWeather organizes the world's weather data into the most valuable local information. The app includes radar, satellite, detailed wind, rain, tide, swell and UV forecasts, as well as moon phases, and sunrise and sunset times. Going beyond the average weather service, we process and fine-tune forecast data to the specific coordinates of thousands of locations including all suburbs, towns, beaches, rivers, parks, lakes and islands. WEATHER DATA • WEATHER - Six-day NOAA weather forecasts tailored to each location including min/max temperatures, and detailed weather descriptions. • RADAR - Raw NOAA radar data, refined, processed and integrated with iOS maps. • SATELLITE - National satellite view, displaying cloud cover for the entire US, integrated with iOS maps. • TIDES - The most comprehensive tide times system in the USA, bringing together NOAA standard port data with offsets generated for specific locations by WillyWeather. Includes every beach in the US, and many river systems and inlets. • WIND -The most accurate global wind forecast model gathered from NOAA, interpolated to the exact coordinates for each location, and vetted against real-time wind observations to deliver the best performing information. • UV - Hourly UV index forecasts, including alerts outlining extreme conditions when there is risk of harm from unprotected sun exposure. • MOON PHASES - Full moon and new moon phases, illumination and rise and set times. Deeply integrated with tidal data. • RAINFALL - Intuitive visual indication of rainfall probability for the week ahead. • SWELL - Swell height, period and direction for each beach and surf spot in the USA. • SUNRISE SUNSET - Sunrise and sunset times with first light and last light. • REAL TIME observational data - with trends for all locations including current temperature, feels-like temperature, rain today, rain last hour, humidity, pressure, wind speed, wind direction, wind gusts and dew point. • NOAA WARNINGS - Easily accessible and specifically targeted to the locations affected. FEATURES • Interactive rainfall radar, using iOS maps: pan and zoom like you've always wanted through the national NOAA radar network, to see exactly where rain is falling around you, or your favorite locations. Our mapping features provide more control and detail than any other US weather resource. • Stunning, interactive tide, swell, and wind forecast graphs which allow you to easily interpret the conditions at your favorite surf beach, secret fishing spot or upcoming hike - in real-time, and up to seven days in the future. We're particularly proud of our graphs, we pushed the boundaries to provide you with more context, and more detail for each weather type. • A beautiful, simple and organized interface in which the weather data that is important to you is easy to find, consume, and interact with. Our goal was to present accurate and relevant weather information to you, as quickly, and easily as possible. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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.

SUGGESTED BUILD STACK
React Native
Expo
Supabase
Axios
Zustand
React Navigation
BUILD KIT DIFFICULTY
Advanced

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.