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
Tapon - Stories & Novels
Tapon: Your Ultimate Online Novel Library
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
16,601 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included18 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 Tapon - Stories & Novels: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Tapon: Your Ultimate Online Novel Library Tapon is your go-to app for addictive online novels. From romance and fantasy to werewolves, billionaires, and vampires — discover stories you’ll love, updated daily. [Huge Library, Fresh Stories Every Day] • Thousands of novels across genres: Romance, Action, LGBTQ+, Dark Romance, and more • Popular tags and classic tropes: contract marriage, revenge, rebirth, she-power, and more • Smart search and personalized recommendations [Comfortable & Immersive Reading] • Adjustable font sizes and styles • Day Mode & Night Mode • Multiple reading modes: scroll, flip, or swipe • A smooth, distraction-free reading experience [Earn Rewards, Unlock More Stories] • Daily check-ins and Lucky Draw: earn free coins • All-Access Reading Pass: unlimited access to all short stories [Coin Pack Subscriptions] • Get instant free coins and exclusive discount coupons • Daily check-ins to earn extra coins • Monthly, quarterly, and yearly plans available • Auto-renewable — cancel anytime in your account settings Download Tapon today and dive into your next favorite story. New releases added daily! Privacy Policy: https://support.tapon.com/privacy_policy_en_3000.html Terms of Use: https://support.tapon.com/user_agreement_en_3000.html
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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
Allow users to customize their reading experience with themes and font sizes.
Assumption to check: Limited personalization options for users
Validate with people who use this workflow before building.
Hypothesis 2
Implement a recommendation system based on user preferences and reading history.
Assumption to check: Difficult to find new stories
Validate with people who use this workflow before building.
Hypothesis 3
Enable users to download stories for offline access.
Assumption to check: Lack of offline reading capabilities
Validate with people who use this workflow before building.
Hypothesis 4
Add clearer explanations of subscription benefits and features.
Assumption to check: Subscription options may be unclear
Validate with people who use this workflow before building.
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
TypeScript
React Navigation
Zustand
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.
