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
京东读书-读好书，上京东
【京东读书】百万好书聚集地，畅享品质阅读，致力于打造纸、电、声一站式全阅读生态平台。
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
644 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
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
Preview a sample Build Kit No email needed
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.
JavaScript is required to complete mailbox verification.
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 京东读书-读好书，上京东: map the core Books workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Add community features like book clubs or discussion boards.
Assumption to check: Limited social features for sharing and discussing books
Validate with people who use this workflow before building.
Hypothesis 2
Implement personalized book recommendations based on user reading history.
Assumption to check: Difficulties in discovering new books that fit personal preferences
Validate with people who use this workflow before building.
Hypothesis 3
Streamline UI design for better readability and navigation.
Assumption to check: Cluttered UI with too many options
Validate with people who use this workflow before building.
Hypothesis 4
Ensure reliable data syncing and backup across multiple devices.
Assumption to check: Inconsistent syncing of reading progress across devices
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
【京东读书】百万好书聚集地，畅享品质阅读，致力于打造纸、电、声一站式全阅读生态平台。 那些沉甸甸的书，我们都压缩成巴掌大呈现给你;那些被时间封存了的文字，我们都吹散上面的灰尘呈献给你; 那些被人们称赞的绝妙灵魂，我们都一一排好队分享给你。 在这里你可以暂时忘却生活的鸡毛，用碎片的时间领略不一样的人生。 总之，有一个世界想给你看~ 【读书，不只有精神食粮】 在这里，除了能享受到知识上的福利，我们还有新人礼包，每天签到打卡也有超值礼包相送哦! 【读书，不只有一种人生】 我们有60万册电子书供你阅读，也有60万种人生供你体验。 【读书，不再是无人相伴】 当你走在路上，当你不方便阅读的时候，别担心我们有有声。 10万小时的有声内容，给你10万小时的暖心陪伴。 【读书，不再言知己好难】 读书是否有时候觉得曲高和寡，孤掌难鸣?想要寻到知己，不如从分享开始吧。赠一得一，把你喜欢的书籍送给你的朋友，把你的品味分享出去，我相信总有一个人会懂你。 【近日好书】 影视原著:《欢乐颂》《足利女童连续失踪事件》《生吞》《长安十二时辰》《全职高手》《雪鹰领主》《斗破苍穹》《冰与火之歌》 文学小说:《在岁月中远行》《白夜行》《白鹿原》《活着》 经济管理:《小米创业思考》《贫穷的本质》《原则》《富爸爸穷爸爸》 生活休闲:《断舍离》《人生效率手册:如何卓有成效的过好每一天》《有些事现在不做，一辈子也不会做了》 历史考古:《文明的故事》《半小时漫画中国史+世界史》《万历十五年》《历史的温度》 【京东读书vip连续包月服务说明】(ios)订阅周期:一个月订阅价格:每月25元 付款方式:用户确认开通并付款后计入itunes账户取消续订:如需取消续订，请在当前订阅到期24小时前，手动在itunes/appleid设置管理中关闭自动续订功能 续订功能 续订:苹果itunes/appleid账户会在到期前24小时内扣款，扣款成功后订阅周期顺延一个月 连续包月服务协议: https://jdread-api.jd.com/h5/protocol_month_pay
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Supabase
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.
