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.
The quickest way to see when to go outside.
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 Weather Strip: 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: Inaccurate location-based weather data
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited weather alerts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Cluttered interface for some users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Slow loading times during peak usage
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.
The quickest way to see when to go outside. This beautifully crafted app and widget bundle shows forecasted clouds, rain, snow, wind, auroras, rainbows, and other weather phenomena in a comprehensive timeline that's easy to understand at a glance. Innovative features include: • Extreme weather warnings are shown directly on the timeline, so you can see exactly when the danger is expected — including thunderstorms, fires, hurricanes, flooding, and landslides. • Inline minute-by-minute precipitation forecasts show the next-hour conditions derived from radar stations. • Air quality forecasts combine local sensor readings to provide health guidance. • Our proprietary algorithm even predicts the chance of rainbows! Use the interactive map to request forecasts for any location in the world — including mountains, trails, lakes, and literally anywhere you place a marker. We take privacy seriously with NO ads, NO tracking, and NO third-party analytics. Weather Strip only stores location data on your local device, and it always uses approximate locations when requesting weather forecasts. Weather Strip also respects your data plan, with optional background app refresh that automatically learns your habits, and the ability to view your recent forecasts even when your connection drops. Weather Strip is completely free to try for two weeks. After that, a minimal subscription price helps us keep the service running. (Subscriptions automatically renew unless canceled within 24 hours before the end of the current period. You can turn off auto-renewal at any time by going to your Account Settings on the App Store after purchase.) Not all features are available in all locations. Forecasts are issued by Foreca and Apple Weather globally and by the U.S. National Weather Service (NOAA NWS) in the United States. Designed by data visualization researcher Robin Stewart to help everyone enjoy the outdoors.
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.