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.
Beautifully designed weather, with trusted air quality built in.
Free
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 Good Air: Weather & AQI Widget: 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 location search capabilities
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of detailed weather alerts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited widget options
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.
Beautifully designed weather, with trusted air quality built in. Good Air brings together the two things you check every day: what the weather is doing, and what the air is like. A weather experience that actually feels good to open, plus live AQI from the EPA's AirNow network. Real data, calm design, no clutter. WEATHER, DONE RIGHT Weather should not feel like a spreadsheet. Good Air is built to be looked at. Animated skies that shift with the real conditions, smooth detail you can swipe through, and an hourly forecast that is a pleasure to read. If you have wanted a weather app that feels designed rather than thrown together, this is it. - Hourly and current conditions in a clean, readable layout - Animated visuals that reflect the real sky around you - Temperature, conditions and the details that matter, nothing you do not - Save any city and check its weather in a tap - Light and dark mode, both gorgeous AIR QUALITY YOU CAN TRUST Underneath the beauty, Good Air is serious about air. Live AQI for your location, pulled from the nearest official monitoring station on the EPA's AirNow network, the same data behind government air quality alerts across the United States. - Live AQI for your GPS location from the nearest AirNow station - Full pollutant breakdown: PM2.5, PM10, O3, NO2, SO2, CO - 24 hour AQI trend charts for every monitoring station - Live rankings of America's cleanest and most polluted cities - Plain English guidance for every air quality level - Wildfire smoke and ozone days made clear at a glance WIDGETS FOR YOUR HOME SCREEN - Home screen widgets for weather and AQI, for your nearby location or any saved city - Glance at the forecast and the air without opening the app - Hourly and daily forecast, always current, beautifully designed BUILT ON THE US EPA AIR QUALITY INDEX Good Air uses the US Air Quality Index published by the Environmental Protection Agency (EPA), the same 0 to 500 scale used across AirNow and government air quality dashboards. The numbers you see match what the rest of the country sees. Good Air is an independent app. It is not affiliated with, endorsed by, or sponsored by the EPA, AirNow, or any US government agency. MADE FOR EVERYDAY LIFE - Runners checking the air and the temperature before a morning jog - Parents glancing at PM2.5 and the forecast before school pickup - Anyone tracking wildfire smoke drifting into their area - People deciding on a jacket, an umbrella, or staying indoors - People managing asthma, allergies or respiratory conditions NO CLUTTER, NO ADS, NO LOGIN No account. No sign up. No ads. Location is used only to find your nearest station and local weather, and is never stored on our servers. Bookmarks stay on your device. One clean, calm app, that is it. SIX POLLUTANTS, EXPLAINED - PM2.5, fine particles from vehicles, wildfire smoke, industry - PM10, dust, construction, road pollution - O3 (Ozone), a summer pollutant, worse in heat and sunlight - NO2, traffic and combustion - SO2, industrial and power plant emissions - CO, incomplete combustion Tap any pollutant for its current level, unit and contribution to the overall AQI. DATA SOURCES Air quality data is sourced from the EPA's AirNow network of official monitoring stations. Full details are inside the app under More, Data Sources. All trademarks belong to their respective owners. IMPORTANT AQI values reflect the nearest available public monitoring station, which may be several miles from your exact location. Good Air is an information app. It is not a medical device and is not a substitute for professional medical advice. Beautiful weather. Honest air. Plan your day with both. Privacy Policy: https://www.goodairindia.com/privacy-policy Terms of Use: https://www.goodairindia.com/terms
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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.