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.
Your audiobooks, beautifully organized.
$9.99 · In-app purchases
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 DeerReader: Audiobook Player: map the core Books 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 audiobook options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline listening option
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Subscription-only model can deter some users
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.
Your audiobooks, beautifully organized. DeerReader is a sleek, intelligent audiobook player designed for serious listeners and collectors. Whether you have a few favorites or a sprawling digital library, DeerReader gives you the tools to make listening effortless and beautiful. -- Seamless Listening Experience -- DeerReader adapts to you. The player UI matches your audiobook cover, so every session feels immersive and cohesive. Play, pause, and skip with intuitive controls designed for long sessions. -- Instant Search, Instant Listening -- Find the right book, author, or collection in seconds. Our fast, unified search makes browsing huge libraries feel light and responsive. -- Home Screen Widget -- Stay in the story, right from your home screen. Instantly jump back into your audiobook with our widget and see your recent listens at a glance. -- Let Apple Intelligence Do the Sorting -- DeerReader can use Apple Intelligence to automatically organize your audiobooks into themed collections and series, complete with matching artwork and clean labels (perfect for large libraries). ----- Why DeerReader? - Designed with audiobook lovers in mind - Gorgeous, adaptive design - Home screen widget access - Full collection support - Lightning-fast search - Intelligent auto-sorting Whether you’re replaying a classic or diving into something new, DeerReader makes every listen smoother, smarter, and more beautiful.
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.