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
BookWatch - Visual Learning
If you love books but prefer watching them as movies this app is for you.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
12,987 ratings · Top 15%
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 included18 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 BookWatch - Visual Learning: 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
Integrate social sharing and interaction features such as comments and likes.
Assumption to check: Limited user engagement features compared to social media platforms
Validate with people who use this workflow before building.
Hypothesis 2
Implement personalized recommendations based on user behavior.
Assumption to check: Inconsistent content discovery algorithms
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to download videos and books for offline viewing.
Assumption to check: Lack of offline access to saved content
Validate with people who use this workflow before building.
Hypothesis 4
Provide additional revenue streams through tips or ad placements.
Assumption to check: Limited monetization options for content creators
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
If you love books but prefer watching them as movies this app is for you. Watch fiction and booktok books as movies or learn new things in a fun and easy way from the best nonfiction books. Get the key insights from non-fiction books in animated book summaries. Our animated video summaries keep you focused and you can learn the best non-fiction books just by watching 30 minute videos. What if you could watch books? - Never feel bored or overwhelmed again when it comes to learning new things. - We deliver key ideas from nonfiction books in animated video summaries. Why our book summaries are the best? 1. Thorough Summaries: We do thorough summaries covering all the ideas of the book. No more 10 minute summaries. 2. Whiteboard Animation: We use whiteboard animation videos to keep your attention. Never feel bored again when learning from books. 3. The Best Books: Get instant access to the best selling self-development and business book summaries. Terms of use: https://www.bookwatch.com/terms-and-conditions-of-use
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 Native
Expo
Supabase
React Navigation
Zustand
react-native-video
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.
