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
MetroNovel - Let Stories Shine
MetroNovel is an innovative online novel app that brings the world of captivating stories right to your fingertips
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
2,493 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 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 MetroNovel - Let Stories Shine: 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 filtering and sorting options for better user experience
Assumption to check: Limited content discovery options
Validate with people who use this workflow before building.
Hypothesis 2
Introduce community moderation tools to enhance content quality
Assumption to check: User-generated content moderation concerns
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the subscription model and provide clear value for each tier
Assumption to check: In-app purchasing complexity
Validate with people who use this workflow before building.
Hypothesis 4
Add gamification elements to encourage continued reading and story creation
Assumption to check: User engagement drops after initial use
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
MetroNovel is an innovative online novel app that brings the world of captivating stories right to your fingertips. Featuring an extensive library of both popular and hidden gems, MetroNovel allows you to explore new worlds and characters with just a tap. With a vast array of fiction resources, MetroNovel caters to all literary preferences, providing captivating novels that will leave you spellbound. Stay up-to-date with the latest releases and trending stories through curated recommendations tailored to your preferences. MetroNovel's intelligent algorithm learns your reading habits and suggests novels that align with your interests, ensuring you never run out of captivating content. Discover a diverse range of novels, from fantasy epics to heartwarming romances, MetroNovel caters to every reader's taste, ensuring there's always something captivating to delve into. Whether you're a casual reader or a devoted bookworm, MetroNovel offers a personalized reading journey that fits seamlessly into your lifestyle. Read on your own schedule, bookmark your favorite chapters, and pick up where you left off whenever and wherever you please. Dive into immersive narratives, get lost in intricate plots, and connect with compelling protagonists, all within the comfort of your mobile device. Experience the joy of reading with MetroNovel, where imagination knows no bounds and stories come to life with every swipe. Embark on a literary adventure unlike any other and indulge in the magic of words with this exceptional online novel app! Subscription Agreement 1. Period：monthly(auto-renewable subscriptions) 2. Price：$19.99/month 3. Payment：The purchase will be charged to your iTunes account. 4. Renewal：The Apple iTunes account will automatically deduct fees within 24 hours before the subscription expires. After successful deduction, the subscription will be postponed for one cycle. 5. Cancel：You can cancel your subscription at any time 24 hours before the subscription expires. 6. Manage subscriptions: You can view and manage your renewals. 7. Award：After subscribing, the coins and bonus received each month are limited. If you need more coins, please make an additional recharge. 8. Privacy:https://api.metronovel.com/privacy_policy 9. Term of Service:https://api.metronovel.com/user_agreement
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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
Supabase
Zustand
React Navigation
Expo Image Picker
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.
