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 Notebooks: Write and Organize: map the core Productivity 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: Users report occasional sync issues across devices.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Some users find the UI cluttered with too many options.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited formatting options compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: High initial price with no free trial option.
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.
Own your notes — forever. Notebooks is a writing and organization app with no subscription, no lock-in, and no worries. Your documents are stored as standard files you can always access, export, or move freely. Pay once. Use for life. Use Notebooks as a personal wiki, Zettelkasten, document archive, task manager, or long-term writing space. Capture quick notes, turn them into actionable tasks, combine text fragments into chapters, organize research, or keep business documents separate from personal journals — without ever switching apps. Designed to help you stay focused and work at your own pace, Notebooks grows with your needs and is always ready to support you. WRITE AND CREATE Create beautifully formatted documents with styles, attachments, tables, checklists, and optional tables of contents. Choose from ready-made styles or design your own. Write in different ways: Formatted text (WYSIWYG) Plain text, with smart handling of lists, automatic character pairing, and a focused writing view Markdown, supporting MultiMarkdown and Discount, with syntax highlighting, dedicated keyboard keys, wiki-style links, and interactive checklists Sketch ideas or annotate images and PDFs using Apple Pencil. STORE AND ORGANIZE Notebooks stores all documents as regular files in standard formats. You always remain in control — no lock-in, no export worries, fully compatible across devices and over time. Organize your work in books and nested hierarchies without limits. Import PDFs, emails, web pages, MS Office and iWork documents, images, audio, video, and more. Use full-text search to find even the most deeply nested document. PLAN AND ACT Turn books into project lists and documents into tasks. Assign due dates and alerts, create nested projects, and track progress naturally — right where your work lives. Use simple checklists in formatted documents or Markdown for lightweight task tracking. STAY FOCUSED Link documents together to build knowledge over time. Use wiki-style links, backlinks, contexts, and smart books to keep everything connected and within reach. When you rename or move documents, links stay intact. A PLACE YOU CAN RELY ON Sync your documents between iPhone, iPad, Mac, and PC. Work on documents stored in other apps, compile selections into PDFs or eBooks, scan documents and extract text using OCR, and trust that your data stays accessible — now and in the future. With time, Notebooks often becomes the one place users rely on to keep everything that matters close at hand. WHAT USERS SAY “Notebooks is a wonderful app — sophisticated in an unassuming way. I feel more productive without spending time managing the app itself.” “You are GTD in every way that makes it efficient — and makes me efficient.”
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.