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.
Windy.app - wind, waves and weather forecast app for surfers, kitesurfers, windsurfers, sailors, fishermen and other wind sports
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Windy.app — Wind, Tides, Radar: 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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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
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complex navigation for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Heavy data usage for radar features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent updates for saved locations
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Windy.app - wind, waves and weather forecast app for surfers, kitesurfers, windsurfers, sailors, fishermen and other wind sports. FEATURES: • Wind report, forecast and statistics: wind map, accurate wind compass, wind meter, wind gusts and wind directions. It’s very useful for extreme wind sports. • Wind alert: Set up windalert and be aware of wind, storm and tornado warning via push-notifications • Weather history (archive) for 2012-2024: view wind data, temperature (day and night) and atmospheric pressure. Weather archive will help you to choose the best month for travel to the spot. • Local forecast from NOAA: temperature in Celsius, Fahrenheit and Kelvin, humidity, wind speed, precipitation (rain and snow). Forecast for 10 days with 3 hours step in metric or imperial units: m/s (mps), mph, km/h, knt (knout), bft (beaufort), m, ft, mm, cm, in, hPa, inHg. NOAA is a National Oceanic and Atmospheric Administration / National Weather Service (nws). • Wave forecast: ocean or sea conditions, ocean waves and sea swell, fishing forecast • Animated wind tracker: weather radar for sailing, yachting and kiting in light wind • Cloud base/Dewpoint (dew point) data: necessary weather information for pleasant paragliding • Spots: over 30.000 spots sorted and located by the type and area. Add your spots to favourites. • Spot chats. Got anemometer? Share info about weather conditions and wind direction in the chat from a kite spot. • Community: exchange weather reports on the spot. Want to be a local/spot leader? Email us the name of your spot at [email protected] and we will create a chat for it. • Weather Stations: online data from nearby online weather stations. • Offline Mode: activate offline mode and check the forecast for your activities without internet connection. PERFECT FOR: • Kitesurfing (kitesurf) • Windsurfing (wind surf) • Surfing • Sailing (Boating) • Yachting • Paragliding • Fishing • Snowkiting • Snowboarding • Skiing • Skydiving • Kayaking (kayak) • Wakeboarding • Cycling • Hunting (hunt) • Golf -------------------------- The free version allows you to use basic app functions. WINDY PRO Account auto-renewable subscription allows using all functions of this app. Subscription length periods: 1 month with 3 days free trial, and 1 year with 7 days free trial. Payment for WINDY PRO Account subscriptions will be charged to your iTunes account at the time of purchase. Your subscription will be automatically renewed every 30 or 365 days. If you have never subscribed to a monthly Premium account subscription before, you will have the option of getting a free 3/7-day trial period. Cancelling the trial period will immediately disable your subscription. Payment for subscription renewals will be charged to your account within 24 hours prior to the end of the current period. You can disable subscription renewal in your iTunes account settings on your device. Terms of Use: https://windyapp.co/CustomMenuItems/34/en -------------------------- Created by kite addicted for wind addicted! Be WINDY. Join us! Waiting for your feedback and recommendations. Help us to make the best wind sports app!
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.