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
Yoru Studios: Fiction & Audio
yoru studios is the ultimate app for fans of webnovels, light novels, and audiobooks
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
5 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 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 Yoru Studios: Fiction & Audio: 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
Add features like speed control and bookmarks during playback.
Assumption to check: Limited audio features for playback customization
Validate with people who use this workflow before building.
Hypothesis 2
Include comments, ratings, or user forums.
Assumption to check: Lack of community features for user interaction
Validate with people who use this workflow before building.
Hypothesis 3
Implement clearer explanations and trial options for subscriptions.
Assumption to check: Subscription paywall can be unclear
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to create custom categories or tags for stories.
Assumption to check: Limited genre categorization
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
yoru studios is the ultimate app for fans of webnovels, light novels, and audiobooks. discover exclusive romance, romantasy, fantasy, action, drama, and spicy romance from top asian authors and publishers — with new chapters every day. read & listen your way: switch seamlessly between text and audio. pay once per chapter: unlock stories using stardust, with no ongoing subscription. earn or purchase stardust: watch optional reward videos or purchase directly. cross-platform access: sync progress between mobile and web desktop. ad-free reading: enjoy stories without pop-ups or banner ads. community powered: inline comments, story walls, and a friendly discord. whether you love romance novels, fantasy adventures, or asian-inspired stories, yoru studios makes every chapter unforgettable.
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
Axios
@react-navigation/native
expo-av
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.
