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
OpenToon - Manga Translator
Want to read the latest chapters without waiting? OpenToon uses advanced AI optimized for comics to translate chapters from any source - including raws.
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.5
297 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 included15 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 OpenToon - Manga Translator: 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 faster algorithms and provide user feedback during processing
Assumption to check: Image processing can be slow and unreliable
Validate with people who use this workflow before building.
Hypothesis 2
Allow more comprehensive editing features and formatting options
Assumption to check: Limited editing capabilities for extracted text
Validate with people who use this workflow before building.
Hypothesis 3
Enhance support for different image resolutions and formats
Assumption to check: Difficulties in handling various manga formats
Validate with people who use this workflow before building.
Hypothesis 4
Integrate sharing features to allow users to share translations easily
Assumption to check: No social sharing options for translations
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
Want to read the latest chapters without waiting? OpenToon uses advanced AI optimized for comics to translate chapters from any source - including raws. How it works: - Paste a chapter URL from any site - AI automatically translates the text inside the speech bubbles - Tap any bubble to edit names, dialogue, or tone - Translated chapters are saved on your device for offline reading Why readers choose OpenToon: - High-quality AI translation that handles comic dialogue naturally - Fully offline once translated - Easy editing of any text bubble - Ideal for reading new chapters early - Supports Korean manhwa, Japanese manga, Chinese manhua, and webtoons Unlike browser translators that break the layout, OpenToon keeps the original comic format while giving you a clean, editable translation. Download OpenToon and start reading without the wait!
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
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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.
