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
AstraNovel - Infinite Books
Dive Into a World of Endless Stories
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
7,350 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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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 AstraNovel - Infinite Books: 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 an advanced search and filter functionality.
Assumption to check: Limited story selection compared to competitors.
Validate with people who use this workflow before building.
Hypothesis 2
Create a cleaner, minimalistic design.
Assumption to check: User interface can be cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the subscription flow with clear explanations and benefits.
Assumption to check: In-app purchase process is not user-friendly.
Validate with people who use this workflow before building.
Hypothesis 4
Add functionality for offline access to saved stories.
Assumption to check: Lack of offline reading 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
Dive Into a World of Endless Stories Join a community of book lovers and explore AstraNovel, your ultimate portable library. Whether you love heart-fluttering werewolf tales or captivating billionaire dramas, we have over 500,000 web novels waiting for you. Why Readers Love AstraNovel: - Massive Library: Access a huge collection of free novels, heartwarming romances, and fantasy epics. - Read Offline: One tap downloads your favorite chapters. Enjoy your stories anywhere — no Wi-Fi or data needed. - Daily Updates: Never run out of content. New chapters and exclusive stories are added every single day. - Smart Sync: Your reading progress is saved automatically across all your devices. Find Your Favorite Genre From trending fan-fiction to magical adventures, find exactly what you're looking for: - Werewolf & Shifter: Alpha leaders, fated pairs, lunar legends. - Billionaire Drama: Grumpy x Sunshine, arranged partnerships, hidden heirs. - Romance & Heartfelt: Slow-burn love, enemies to lovers, second chances. - Fantasy & Paranormal: Vampires, magic, dragons, and epic quests. A Personalized Reading Experience - Eye-Care Mode: Adjustable background colors and night mode for comfortable late-night reading. - Custom Fonts: Choose the font style and size that fits you best. - Smart Alerts: Follow your favorite authors and get instant notifications when new chapters drop. Trending Titles on AstraNovel: - Marked Twice by the Alpha King - The Unwanted Alpha Series - Genius Kids' Scheme: Claiming the Billionaire's Empire - I Am His Wolfless Luna - The Secret My Husband Kept From Me Contact & Legal Official Website: https://www.astranovel.app/ Privacy Policy: https://www.astranovel.app/pages/privacy.html Terms of Use: https://www.astranovel.app/pages/service.html Subscription Terms: https://www.astranovel.app/pages/subscription-terms.html
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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
Zustand
Axios
React Navigation
react-native-gesture-handler
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.
