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.
App Overview
InstantWeather: Local Forecast
Make the forecast feel like yours
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
376 ratings · Top 15%
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.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for InstantWeather: Local Forecast: 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
Use multiple data sources to improve accuracy.
Assumption to check: Inaccurate weather data in some regions.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize map rendering and reduce data load.
Assumption to check: Slow loading times for radar map.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to set custom alerts for specific weather conditions.
Assumption to check: Limited customization options for notifications.
Validate with people who use this workflow before building.
Hypothesis 4
Offer an ad-free subscription model for premium users.
Assumption to check: Ads disrupt user experience.
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
Make the forecast feel like yours. InstantWeather combines clear, detailed weather information with photographic backgrounds you choose, creating a weather app that is both useful and personal. See current conditions at a glance, explore the hourly outlook, or plan ahead with a 10-day forecast. Choose your current location or search for a city or region, then quickly return to recently viewed locations. Main features - Current conditions with temperature, feels-like temperature, humidity, wind, and daily high and low - Hourly forecasts with temperature, precipitation chance, wind, and weather conditions - 10-day forecasts with expandable daily details - Daily precipitation amounts, wind gusts, sunrise, sunset, moon phase, and expected high and low times - Current-location weather and city or region search - Recent locations for faster switching - Celsius and Fahrenheit support - Custom backgrounds using a new photo or an image from your photo library - Adjustable background blur and brightness - Customizable text and icon colors - Dedicated layouts for iPhone and iPad - Personalize backgrounds for different weather conditions and keep the forecast readable by adjusting the image, colors, and effects to suit your style. Weather data is provided by Apple WeatherKit.
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
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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.
