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
Zero Reader - 超简洁 txt 小说阅读器
Zero Reader 是一款超轻量、纯净的本地小说阅读器，没有任何广告。
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included16 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 Zero Reader - 超简洁 txt 小说阅读器: 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 recommendation algorithm based on user preferences.
Assumption to check: Limited content discovery and book recommendations.
Validate with people who use this workflow before building.
Hypothesis 2
Enable cloud sync for reading progress and library.
Assumption to check: Inconsistent reading experience across devices.
Validate with people who use this workflow before building.
Hypothesis 3
Add themes, font sizes, and background colors for a personalized reading experience.
Assumption to check: Insufficient customization options for readers.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a social sharing feature to connect with friends and share book lists.
Assumption to check: Limited social features for sharing book recommendations.
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
Zero Reader 是一款超轻量、纯净的本地小说阅读器，没有任何广告。 导入 TXT 、EPUB、MOBI 文件，即可快速开始阅读。 App 专注于最基础、最重要的阅读体验：清爽排版、目录跳转、阅读进度、阅读状态统计、书签、主题与字体设置。 Zero Reader 不需要任何网络权限，不含任何广告。导入的文件、阅读进度和设置等所有信息均保存在设备本地，不会以任何形式上传到云端。 针对排版进行了超级多的优化！设置项可玩性真的很高！字体随意导入，字重无极调节（可变字体），上下左右边距，justify，以及你可能需要的各种操作，这里都有。 主要功能： - 导入本地 TXT 文件 - 清爽的阅读界面 - 支持目录与章节跳转 - 支持书签、阅读进度和最近阅读 - 支持阅读状态统计 - 支持字体、字号、行距、主题与边距设置 - 支持深色模式 - 支持中英文自适应 Zero Reader 秉持 "Zero Distractions. Just Reading." 的原则，纯净、沉浸的享受吧！
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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
Supabase
react-navigation
@supabase/supabase-js
BUILD KIT DIFFICULTY
Intermediate
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.
