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.
App Overview
iBooksPro
Create Your Own PDF Books with iBooksPro
$24.99 · In-app purchases
PRICE
$24.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for iBooksPro: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Provide extensive font and color customization features.
Assumption to check: Limited reading customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement a better search and categorization system.
Assumption to check: Difficult navigation between books
Validate with people who use this workflow before building.
Hypothesis 3
Offer cloud sync for annotations and reading progress.
Assumption to check: No synchronization across devices
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a free trial period to attract more users.
Assumption to check: High price point without free trial
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Create Your Own PDF Books with iBooksPro iBooksPro is your personal book creator designed for writers, students, teachers, and anyone who wants to turn ideas into beautifully structured PDF books. Whether you want to create a classic book layout or a flexible modern format, iBooksPro makes it simple and powerful. Two Powerful Views to Build Your Book Classic View: Easily structure your book with predefined pages like cover page, about section, story, license, and copyright. Perfect for professional documents and formal writing. Compact View: Add unlimited custom pages, arrange them freely, and design your book exactly the way you want. Great for quick notes, creative writing, and flexible formatting. Seamless PC to Mobile Connectivity Connect your mobile to your PC and access iBooksPro in your browser over the same Wi-Fi network. Create, edit, and manage your books directly from your computer without needing cables or software. Advanced Privacy and Organization Hidden Cabinet: Keep sensitive books private. Only accessible with a password, giving you full control over your personal content. Hidden Books: Protect selected books from view with a secure password. Ideal for storing private notes or sensitive information. Key Features Create PDF books easily on iPhone or iPad Choose between Classic or Compact layout styles Drag and drop to arrange pages in Compact View Access your book editor via browser on a PC Password-protected hidden cabinet for private content Save and export your books in PDF format Intuitive and clean design for all users Whether you are publishing your own stories or organizing your thoughts, iBooksPro gives you full creative control with professional results. Download iBooksPro today and start writing your next book your way.
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Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Zustand
React Navigation
react-native-paper
expo-linear-gradient
BUILD KIT DIFFICULTY
Intermediate
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.
