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
Readink – Stories & Books
Readink – Escape Into Romance, Fantasy, and Worlds Full of Emotion
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
7,360 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 Readink – Stories & 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 a robust local caching system for offline reading.
Assumption to check: Limited offline access to books
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the subscription process with clearer options and guidance.
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Improve navigation hierarchy and reduce the number of options on the main screen.
Assumption to check: Navigation can feel cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Add personalized recommendations and reading lists based on user preferences.
Assumption to check: Limited personalization features
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
Readink – Escape Into Romance, Fantasy, and Worlds Full of Emotion Readink is where addictive storytelling meets endless imagination. Step into a library filled with heart-pounding romance, supernatural fantasy, dark mafia tension, billionaire obsession, fated-mate werewolves, and every kind of page-turner you crave. Whether you want emotional rollercoasters, high-stakes drama, steamy chemistry, or magical realms full of danger and desire—Readink delivers stories that keep you hooked day and night. What Makes Readink Stand Out 100,000+ serialized stories across today’s most-loved genres: Romance, Werewolf, Billionaire, Fantasy, Mafia, Paranormal, Dark Romance, Urban Fiction, and more. Fresh chapters updated every day so you never have to wait. Smart, personalized book recommendations based on your reading mood. Auto-synced personal library across all devices. Smooth, customizable reading modes for long, comfortable reading sessions. Explore the Worlds Readers Love Most Werewolf, Shifter & Fated-Mate Bonds Billionaire Romance & Power Games Paranormal Fantasy & Witchcraft Mafia, Crime & Dark Obsession Contemporary, Urban & New Adult Fiction LGBTQ+ Romance & Diverse Storylines Western, Action & Supernatural Drama From slow-burn romance to high-voltage fantasy, Readink gives you immersive universes where every chapter leaves you wanting more. Download Readink today and fall into your next obsession. Need help? Contact us anytime: [email protected] Privacy Policy: https://www.Readink.app/privacy-policy.html Terms & Conditions: https://www.Readink.app/terms-of-service.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-native-reanimated
expo-router
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.
