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
Shonen Jump Manga & Comics
Your OFFICIAL source to read the world’s most popular manga, straight from Japan.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
259,547 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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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/
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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 Shonen Jump Manga & Comics: 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
Expand library with user-uploaded content or partnerships.
Assumption to check: Limited selection of manga compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Improve syncing functionality for seamless reading.
Assumption to check: Inconsistent reading experience across devices
Validate with people who use this workflow before building.
Hypothesis 3
Implement download feature for chapters.
Assumption to check: Lack of offline reading capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Simplify paywall and offer more trial options.
Assumption to check: Subscription model can be confusing
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
Your OFFICIAL source to read the world’s most popular manga, straight from Japan. ALL YOUR FAVORITE SERIES IN ONE PLACE! My Hero Academia, Jujutsu Kaisen, One Piece, Chainsaw Man, Demon Slayer, One-Punch Man, Naruto, Bleach, Death Note, Dragon Ball, Boruto, Kaiju No. 8, JoJo's Bizarre Adventure, Spy x Family, and so much more! READ MANGA FREE! New chapters weekly, with brand new series added regularly! Latest chapters are always free! SHONEN JUMP ON-THE-GO! Stream your favorite series anywhere, anytime on our advanced manga reader! Use landscape mode to view awe-inspiring 2-page spreads as they were drawn. Download to read offline! Create an account to sync your reading progress across any device and pick up where you left off! Light and dark modes available! MEMBERS GET MORE! Unlock the digital vault of 20,000+ manga chapters for ONLY $3.99/month (USD*)! Start your 7-day free trial today! “It’s the best deal in comics”–Engadget BUILD YOUR GRAPHIC NOVEL LIBRARY. Get into a new series or finish collecting your favorites. Read free previews of paid volumes before purchasing. *Prices may vary to reflect your local currency. Shonen Jump Membership Details · All payments will be charged to your iTunes account. · Monthly subscriptions will auto-renew through your iTunes account unless you cancel 24 hours before the end of your current subscription period. · You can turn off auto-renew at any time from your iTunes account settings. · Our Privacy Policy can be viewed at: http://www.viz.com/privacy · Our Terms of Use can be viewed at: http://www.viz.com/terms Questions? Comments? Please let us know at [email protected]
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
Zustand
Supabase
React Navigation
Axios
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.
