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.
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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 Met Opera on Demand: map the core Music 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 selection of operas compared to other streaming services.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface can be confusing and cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Playback issues with buffering and quality.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent search functionality.
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.
Start your 7-day Free Trial or subscribe now in the app, through your iTunes account! Met Opera on Demand delivers instant and unlimited streaming of more than 950 full-length Metropolitan Opera performances on your iPad & iPhone—and on your HDTV or connected sound system as well via Apple TV with AirPlay. The Met Opera on Demand iPad/iPhone app is free to download. Explore the app and the catalog, and enjoy a sampling of free preview content. Now you can sign-up for the 7-day Free Trial or purchase a subscription right inside the app for complete and unlimited access to everything available. Highlights of this unparalleled collection of opera performances include: • More than 180 presentations from every season of the Met’s award-winning "Live in HD" series of global movie-theater transmissions, featuring opera superstars Angel Blue, Joyce DiDonato, Renée Fleming, Roberto Alagna, Elīna Garanča, Jonas Kaufmann, Deborah Voigt, and many more • Classic Met telecasts dating from 1977, including "Aida" starring Leontyne Price, "La Bohème" starring Luciano Pavarotti and Renata Scotto, and more • More than 600 radio broadcast performances dating back to 1935, representing nearly all of the most popular operas ever composed and many of the greatest singers in Met history including Björling, Callas, Corelli, Horne, Nilsson, Sutherland, Tebaldi, Te Kanawa, and Tucker • Met Opera on Demand: Now Playing, a new 24-hour audio stream of extraordinary Met performances • Select live radio broadcasts All Met Opera on Demand videos include English subtitles, and many recent HD performances also include subtitles in French, German, Italian, Portuguese, Russian, Spanish, and Swedish, as well as English Closed Captions (CC.) Videos released 2022 and later will also include Audio Description (AD). Subscribers can use AirPlay to watch all videos with the full offering of multi-language subtitles on their TV via Apple TV. New operas are added every month. The app also offers a “Continue Watching and Listening” feature that allows you to stop at any time and resume right where you left off whenever you’re ready. You can bookmark your favorite performances for easy access at any time as well. If you subscribe in the app: Met Opera on Demand offers two auto-renewing subscription types available for purchase through your iTunes Account: Monthly (with a free 7-day trial for first time purchasers) and Annual. Payment will be charged (after any free trial period, if applicable) to your iTunes Account at confirmation of purchase, at the price listed under "Choose Your Offer" (currently $14.99 US Dollars for a Monthly subscription and $149.99 US Dollars for an Annual subscription.) Depending on your App Store country or region, prices might be listed and payments charged in your local currency, US Dollars, or Euros. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your iTunes Account will be charged for renewal within 24 hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and the auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription. The Metropolitan Opera’s Terms & Conditions (http://www.metopera.org/user-information/terms-and-conditions/) and Privacy Policy (http://www.metopera.org/user-information/privacy-policy/) also apply.
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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.