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
ContinuousReader: Book Reader
ContinuousReader is a native reading app for Mac, iPad, and iPhone, built around one idea: your reading position should follow you
$19.99
PRICE
$19.99
No 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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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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 ContinuousReader: Book Reader: 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
Allow users to customize reading settings (font, background color, etc.)
Assumption to check: Limited customization options for reading preferences
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline reading capabilities.
Assumption to check: No offline access to books
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social features to share books and recommendations.
Assumption to check: Lack of social features for sharing and recommending books
Validate with people who use this workflow before building.
Hypothesis 4
Introduce detailed reading statistics and progress tracking.
Assumption to check: Minimal analytics on reading progress
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
ContinuousReader is a native reading app for Mac, iPad, and iPhone, built around one idea: your reading position should follow you. Close a book on your Mac at midnight; open it on your iPhone in the morning — same book, same paragraph. YOUR PLACE, EVERYWHERE Reading positions, bookmarks, notes, and library metadata sync over iCloud across every Apple device on the same Apple ID — down to the exact paragraph. Book files sync through iCloud Drive. No account, no server but Apple's own. Each device keeps its own font, size, and theme. OPENS WHAT YOU HAVE EPUB, FB2, MOBI, HTML, TXT, RTF, DOC/DOCX (Mac), and their ZIP variants — with chapter extraction, footnotes, encoding detection, and embedded images. A READING EXPERIENCE YOU CONTROL Nine typefaces and 41 themes across five palettes, plus Typewriter and Terminal. Continuous scroll, paged, or two-page spread. Real hyphenation in Latin, Cyrillic, CJK, Arabic, and Greek. Read Aloud with word-by-word highlighting. On-device translation — nothing leaves your device. Reading statistics with shareable reports. YOUR LIBRARY, YOUR WAY Nested folders, color tags, genres, seven-color bookmarks with notes, three view modes, and OPDS catalogs (Standard Ebooks, Project Gutenberg, Feedbooks, or your own). PRIVATE BY DEFAULT No analytics, no telemetry, no tracking, no ads. Your books are plain files in a folder you can copy anywhere. One-time purchase. Universal Purchase across Mac, iPad, and iPhone — buy once, read everywhere. Family Sharing supported.
Written user reviews are not shown here. Check current App Store reviews >
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 Navigation
Expo
React Native Gesture Handler
React Native Reanimated
Zustand
Axios
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.
