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.
The Shelf is a private reading tracker for books you study, stories you love, and everything in between
$4.99
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.
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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
The Shelf is a private reading tracker for books you study, stories you love, and everything in between. Search or scan a book, choose the edition that matches yours, then track only what feels useful. BUILD YOUR LIBRARY • Search by title, author, or ISBN, or scan one book or a whole stack. • Keep each edition or physical copy as its own book with its own details and history. • Choose Owned, Wishlist, or Track without implying that every saved book is yours. • Organize books with reading status, your own Lists, shelf locations, and Subjects. • Import Goodreads or StoryGraph CSV files and export a complete backup whenever you want. TRACK READING WITHOUT FRICTION • Update pages, percentage, audiobook position, chapters, or study problems. • Start a focused Reading, Listening, or Study session from any book. • Confirm or correct a book's page count before its first Reading or Study session. • Keep every re-read separate, with its own dates, rating, mood, and notes. BORROW AND LEND WITH CLARITY • Mark a book as borrowed without pretending you own it. • Record who lent or borrowed it, dates, due dates, and optional notes. • Keep editable borrowing and lending histories for each physical book. • Add a gentle device reminder when a borrowed book is due. SEE YOUR READING LIFE • Explore daily, weekly, monthly, yearly, and recent activity. • See goals, streaks, totals, records, and finished books on a reading calendar. • Compare progress by Subject and view your library as a prerequisite map. • Revisit books, notes, and quotes from this day in earlier years. REMEMBER WHAT YOU READ • Save notes, journal entries, session thoughts, and favorite quotes. • Add photos to journal entries and quotes, then review text recognized on your device. • Find everything again in each book's Notebook. MAKE IT FEEL LIKE YOURS • Choose your background and two accent colors, or start with an included Look. • Pair a Solid or Gradient background with System, Glass, Soft Depth, Lined Paper, Dot Grid, or Dog-eared Page cards. • Browse a detailed shelf or a clean wall of covers. MADE FOR IPHONE AND IPAD • Use widgets, Spotlight, Siri, keyboard, pointer, Split View, and Stage Manager. • Sync with iCloud when you choose and keep a complete JSON backup. PRIVATE BY DESIGN • No accounts, ads, tracking, analytics, or subscriptions. • Optional book lookup sends only a title, author, or ISBN after you ask the app to search or fetch. • Camera images and recognized text stay on your device or in your own optional private iCloud library. • Use the optional system privacy lock and outside-app redaction when you want them. • Turn Online Lookup off for a fully offline library. Pay once, own it forever.
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.