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
Jay價值選股
【Jay 價值選股｜美股投資分析工具】
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Jay價值選股: map the core Finance 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
Incorporate user testimonials or a community feature to build trust.
Assumption to check: Lack of user reviews or social proof
Validate with people who use this workflow before building.
Hypothesis 2
Provide tutorial videos or articles within the app.
Assumption to check: Limited educational resources for beginners
Validate with people who use this workflow before building.
Hypothesis 3
Simplify data visualizations with intuitive graphs and explanations.
Assumption to check: Complex stock market data presentations
Validate with people who use this workflow before building.
Hypothesis 4
Enhance notifications with personalized alerts and actionable insights.
Assumption to check: Poor user engagement with notifications
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
【Jay 價值選股｜美股投資分析工具】 核心理念：尋找「又大、又好、又便宜」的優質企業 「Jay 價值選股」是一款專為美股投資者設計的系統化工具，透過市值、體質、估值三大維度評分，幫助你快速掌握一檔股票的規模、基本面與價格吸引力。無論是投資新手或資深股民，都能從「看消息」升級到「看數據與邏輯」。 【五大核心功能】 - Jay 價值選股清單： 系統化篩選優質美股，精選出值得深入研究的標的 - 三維度評分系統： 快速判斷公司的市值規模、財務體質與估值高低 - AI 個股分析摘要： 結合 Jay 投資框架，秒懂公司亮點、潛在風險與估值狀態 - 便宜價自動估算： 綜合歷史數據與指標（如本益比、殖利率），精準捕捉進場時機 - 水位線與持倉追蹤： (付費功能) 學習 Jay 的真實操作邏輯、均價與交易紀錄。 【適合這樣的你】 1. 美股新手： 想要開始投資，卻不知道如何下手篩選標的 2. 基本面愛好者： 想用更有系統、更專業的方法檢視公司體質 3. 理財轉型者： 想擺脫聽明牌的投資方式，建立自己的判斷力 【免責聲明】 本 App 內容僅供投資研究與教育參考，不構成任何買賣建議。投資有風險，請務必自行獨立思考並承擔投資結果。
Written user reviews are not shown here. Check current App Store reviews >
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.
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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.
