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
财新-CaiXin
------ Product Features ------
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
1,177 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 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 财新-CaiXin: map the core News 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
Provide more free content or a better trial experience.
Assumption to check: Limited free content after a few articles
Validate with people who use this workflow before building.
Hypothesis 2
Implement clear and consistent navigation patterns.
Assumption to check: Navigation can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to personalize their news feed more extensively.
Assumption to check: Lack of customization options for users
Validate with people who use this workflow before building.
Hypothesis 4
Enable user control over notification settings.
Assumption to check: Push notifications can be intrusive
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
------ Product Features ------ *Caixin Weekly Digital Edition For decision-makers and management in the fields of finance, economy, industry and investment, it focuses on financial information in economy, finance, industry and other social fields, focuses on reform and opening up, is based on financial information, and provides objective and timely exclusive reports, in-depth investigations, and authoritative analyses. *Financial News It provides accurate and timely records of the rise and fall of important figures in the financial sector; and insightful analysis of the forces that dominate the fate of figures and drive financial events. Updated every weekday, with no limit on breaking news. *Caixin Time, Caixin's ace video program. Caixin Time" is a high-profile video program featuring conversations with global political, business and academic figures. Exclusive interviews with domestic and foreign dignitaries such as Kissinger, Lee Hsien Loong, Carrie Lam, and Lou Jiwei; famous entrepreneurs such as Musk, Wang Shi, Lei Jun, Liu Qiangdong, Dong Mingzhu, Cao Dewang, Li Shufu, and Zhang Chaoyang; and senior economists such as Wu Jinglian, Zhu Min, Summers, and Stiglitz. *Friday at 7pm Every Friday night at 7:00 pm, the audio program brings together the key news analysis of the week, and sees the big trends in the big events. *Caixin's visual presentation. Caixin Vision is a visual program that captures moments with a camera and shows the shadow of the times. Each issue features a combination of 6-8 pages of photographs to present life in all its forms. ------ More auxiliary functions ------ * AI Voice Broadcasting AI intelligent anchor "Caixiaoxin" provides you with comprehensive content coverage. Multiple speed, timer, and male and female voice anchor functions can be selected at will, so you can listen to the new financial information freely. *One-click sharing, read to more people Forward the article or generate a poster to grab a limited number of free readings. Share in-depth articles with your friends. ------Subscription Instructions------ TYPES & PRICES -Caixin Express Monthly ￥68 -Caixin Express Yearly ￥648 -Caixin Data Express Lite ￥1298 -Caixin Data Express Pro ￥1998 AUTO-RENEW Your subscription will be renewed automatically 24 hours before its expiration. The payment will be charged to your iTunes account. The renewed subscription will be valid as soon as the payment is confirmed. You can cancel auto-renew by adjusting “subscription” settings of your iTunes/Apple ID. Please note that adjustment must be made at least 24 hours before the expiration of the current subscription period. Privacy Policy: http://corp.caixin.com/priv-ios/ Terms of Service: http://corp.caixin.com/item/ If you have any questions on subscription, please contact our customer service. Customer Service WeChat：caixinkefu001 Customer Service Email：[email protected] Consumer hotline：(+86)400-696-0110
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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
Supabase
Axios
React Navigation
React Native Paper
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.
