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
Shimoe Manga Reader
Shimoe Manga Reader is a free app for reading comics, manhua, manhwa, webtoon, and manga
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
1,424 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 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 Shimoe Manga 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
Focus on a wider library and user submissions.
Assumption to check: Limited manga titles compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Implement a notification system for new releases.
Assumption to check: Inconsistent update frequency for chapters
Validate with people who use this workflow before building.
Hypothesis 3
Add a feature to download chapters for offline access.
Assumption to check: No offline reading mode
Validate with people who use this workflow before building.
Hypothesis 4
Simplify navigation and provide user tutorials.
Assumption to check: Cluttered UI with too many options
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
Shimoe Manga Reader is a free app for reading comics, manhua, manhwa, webtoon, and manga. Inspired by Tachiyomi. No login required! Feature - Create your own library. - Custom library category. - Create blocked genres. - Download the manga chapter for offline reading. - Sort manga by latest or popular and search manga. - Manga reading history. - User library updates. - Backup and restore. - Configurable reading mode. You may purchase an auto-renewing subscription through an In-App Purchase. - Auto-renewable subscription - 1 week, 1 month and 1 year duration - Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. - Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase Terms of Service: https://shimoe.app/tos/ Privacy Policy: https://shimoe.app/privacypolicy/ Disclaimer Shimoe Manga Reader is designed to facilitate the retrieval of images from third-party websites solely for your reading convenience. We do not host or store any content on our servers. All content accessed through Shimoe Manga Reader originates from external sources. We are committed to complying with copyright laws and may block access to content if required.
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
TypeScript
React Navigation
Zustand
BUILD KIT DIFFICULTY
Advanced
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.
