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
AirNow - Real-time Air Quality
AirNow is an innovative mobile application that keeps you informed about real-time air quality worldwide
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
999 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
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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 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.
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 AirNow - Real-time Air Quality: 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
Offer more granular control over alert settings.
Assumption to check: Limited customization for alerts
Validate with people who use this workflow before building.
Hypothesis 2
Implement faster data fetching and caching.
Assumption to check: Data refresh can be slow
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the layout and improve information hierarchy.
Assumption to check: UI can be cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Enhance data sources for wider coverage.
Assumption to check: Limited geographical coverage
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
AirNow is an innovative mobile application that keeps you informed about real-time air quality worldwide. With accurate and up-to-date data, you can monitor pollution levels and access detailed forecasts for the next four days. Key Features: - Air Quality Indicators: The app provides key air quality indicators, including the Air Quality Index (AQI), fine particulate matter (PM2.5 and PM10), nitrogen dioxide (NO2), ozone (O3), sulfur dioxide (SO2), and pollen levels. - Real-time Data: AirNow retrieves data from reliable sources and updates it in real-time, ensuring you have precise and current information on air quality in your region or any location worldwide. - Detailed Forecasts: In addition to real-time data, the app offers detailed forecasts on air quality trends for the next three days. These forecasts help you plan your activities based on predicted atmospheric conditions. - Personalized Advice: AirNow provides personalized advice based on air quality. If you are an active sports enthusiast, the app informs you whether conditions are optimal for outdoor activities. Likewise, if you are sensitive to air pollution, specific recommendations are provided to protect your health. - Multiplatform Availability: AirNow is available on iPhone and Apple Watch, allowing you to access air quality information wherever you are, at any time. Whether you are an athlete focused on performance, an individual sensitive to air pollution, or simply a concerned citizen interested in air quality in your area, AirNow is the ideal application to stay informed and make informed decisions for your well-being. Download AirNow now and breathe healthier air wherever you go!
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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.
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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.
