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
Manga Bat - Daily Update
Manga Bat - Manga Reader is an application designed for convenient manga, manhwa, and manhua reading, both online and offline.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
1,068 ratings · Top 30%
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 included20 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 Manga Bat - Daily Update: 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
Implement advanced search filters and recommendations.
Assumption to check: Limited search functionality compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Offer an ad-free subscription option.
Assumption to check: Ads can be intrusive
Validate with people who use this workflow before building.
Hypothesis 3
Provide notifications for new chapters and updates.
Assumption to check: Inconsistent update frequency for certain titles
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to adjust font size, background color, and reading modes.
Assumption to check: Limited customization of reading experience
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
Manga Bat - Manga Reader is an application designed for convenient manga, manhwa, and manhua reading, both online and offline. With the world's largest manga library, MangaMax compiles various manga sources into a single platform, including MangaNelo, MangaBird, MangaRock, Mangakakalot, Manga here, Manga fox, Mangareader, Batoto, Mangapanda, Kissmanga, Mangago, Mangatown, Mangazone, Manga Top, Manga Monster, Manga Man, Manga Plus, and more. It functions as an aggregator, presenting links from the internet in a user-friendly interface.Updated daily, Manga Bat offers seamless navigation and the following features: - Large Database: Over 20,000 manga, manhua, and manhwa titles. - Bookmark: Save your favorite manga for later reading. - Offline Access: Read online or download for offline reading. - Notifications: Receive alerts for new chapters. - Updates Daily: Chapters are updated promptly. - Dark/Light Mode: Tailor your reading experience for day or night - Device Optimization: Tailored for both iPhone and iPad. Enjoy your favorite manga, manhua, and manhwa anytime, anywhere, with unlimited downloads for offline reading. Terms of use: https://sites.google.com/view/mgtos/home Privacy policy: https://sites.google.com/view/mgreadervn/home DISCLAIMER - Manga Bat does not own or host any content. It simply aggregates links in a convenient, user-friendly interface. Please email [email protected] if you have any questions or concerns.
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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.
SUGGESTED BUILD STACK
React Native
Expo
Firebase
React Navigation
Zustand
Axios
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.
