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.
*** Featured by Apple, Lifehacker, Macworld and Cult of Mac! ***
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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 Forecast Bar - Weather + 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: Inaccurate weather forecasts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Slow loading times
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited customization options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Intrusive ads
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.
*** Featured by Apple, Lifehacker, Macworld and Cult of Mac! *** Forecast Bar offers hyper accurate, hyper local live weather and forecasts right at your fingertips, and is customizable to fit your needs. With 12+ Home Screen and Lock Screen Widgets, including a multi-city widget to see weather in up to 4 locations at once. Forecast Bar includes a beautiful and powerful Apple Watch App with 100+ customizable complications, including hourly and daily visual forecasts, Graphs to visualize several different data points, or a Custom Modular with 3 customizable lines. The Watch app is fully customizable, with 3 custom data points you can add, a customizable hourly data point. You can also customize your backgrounds with several options including using your own images, as well as custom font and font size throughout the app. == Completely Redesigned for iOS 26 and Liquid Glass == Track storms like never before with our all-new NOAA-powered radar featuring live lightning strikes, aurora forecasts, and marine warnings. Watch precipitation approach in real-time right from your Lock Screen with our new Live Activity—see exactly when rain starts and ends without opening the app. Smart Weather Stories transforms forecasts into personalized AI summaries. Connect your calendar to get advice tailored to your plans: "Light rain during your 2pm meeting—bring an umbrella." Never miss a stunning sky with aurora visibility alerts, eclipse notifications, and Beautiful Sunset alerts. Now with iOS 26 Liquid Glass design. == Built Different == Crafted by a 2-person team over a decade. Trusted daily by users who call it "the most accurate weather app" they've used. Always improving—because your weather app should be. == Stay Informed with Push Notifications == - Personalized daily weather reports for any location, at any time you wish - Push notifications for severe weather alerts in the United States - Precipitation alerts sent reliably from our servers (Gold only) - Custom notifications and alerts! You can configure 14 different data points to look out for what matters to you. For example, get notified in the morning when wind during the day will rise above a certain speed, or if temperatures overnight will drop below freezing. (Gold only) - Beautiful Sunset alerts that give you a heads up when a stunning sunset (or sunrise!) is heading your way. Get your cameras ready! (Gold only) - Get notified when earthquakes hit near you! (Gold only) == Weather at a glance, or in depth == - Quickly check the current conditions or forecast for 14 days at a glance, including a succinct summary - Tap on any day's forecast to see an hour-by-hour breakdown - Gorgeous animated weather backgrounds - Apple Weather provided minute-by-minute rain forecasts - Tap again to see rich, interactive charts of even more details like dew point, pressure, visibility, UV index and more - Choose between a compact and highly visual view for weather at up to 8 locations at a time - Animated weather radar in the United States, Europe and Australia, including future radar forecasts, as well as 10+ other powerful visualizations - Forecast Bar supports iPad multitasking in Slide Over and Split Screen All subscriptions to Forecast Bar include a free 7 day trial Subscriptions will be charged to your iTunes account at confirmation of purchase. They will automatically renew at the end of your subscription period unless canceled at least 24 hours prior to the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscriptions or turn off auto-renewal at any time from your iTunes account settings. Cancellation of the current active subscription period is not allowed. Our privacy policy and terms of use are here: http://forecastbar.com/privacy-policy-for-forecast-bar.pdf and https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.