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
Pagebound: Social Book Tracker
Pagebound combines old-school internet forums with robust book tracking—every book has its own forum
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
482 ratings · Top 5%
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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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Pagebound: Social Book Tracker: 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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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
Incorporate personalized recommendations based on user reading history.
Assumption to check: Users find it difficult to discover new books based on their preferences.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance social interactions with comments, likes, or book clubs.
Assumption to check: Social features may feel limited or not engaging enough.
Validate with people who use this workflow before building.
Hypothesis 3
Implement better error handling and user feedback mechanisms.
Assumption to check: Some users report bugs in the book tracking feature.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize themes or add more personal information.
Assumption to check: Limited customization options for user profiles.
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
Pagebound combines old-school internet forums with robust book tracking—every book has its own forum. We are indie, anti-AI, and built by 2 women. Discuss books as you read them, view reading stats, and earn points & badges for tracking your reading. EXPERIENCE SOCIAL READING Read with others, without the commitment of a book club. Whatever you’re currently reading, post thoughts, theories, ideas, reactions, and more to that book’s forum. Sort posts by % read to read along with people from all over the world. Anyone with that book in their library will see and can interact with your post, so it’s really easy to start discussions and make new reader friends. VIEW READING STATISTICS & WRAPUPS Everything you log on Pagebound powers robust reading statistics and monthly wrapups. Look back at your reading habits across beautiful charts and graphs. Share your reading progress at the end of each month with summary views. GAMIFY BOOK TRACKING Earn badges that reflect your reading taste by joining Quests. Accumulate points for logging your reading, sharing your thoughts, and contributing to the community. Showcase your badges on your profile and unlock fun rewards. ORGANIZE YOUR LIBRARY Plan your TBR (to-be read) by month or year. Rate books in half-star increments with sub-ratings for enjoyment, quality, characters, and plot. Track your books accurately with Interested, Paused, and DNF (did not finish) reading statuses. Mute books, track tandem reads, and more. MAKE READER FRIENDS Connect with other readers based on what you think, not what you look like. With anonymous profiles, no algorithm and private follower counts, we connect readers based on shared taste in books, not clout. Terms of Use: https://support.pagebound.co/terms_of_use
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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.
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BUILD KIT DIFFICULTY
Expert
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.
