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
台股ETF折溢價查詢 捐贈版
捐贈版和免費版的差別
$59.99 · In-app purchases
PRICE
$59.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.0
1 ratings · Top 30%
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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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 台股ETF折溢價查詢 捐贈版: 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
Provide comprehensive historical data with detailed analytics.
Assumption to check: Limited historical data access
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to customize notification settings.
Assumption to check: No customization options for notifications
Validate with people who use this workflow before building.
Hypothesis 3
Introduce features for user discussions and insights.
Assumption to check: Lack of community features
Validate with people who use this workflow before building.
Hypothesis 4
Enable social sharing for users to share findings easily.
Assumption to check: No social sharing options
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
捐贈版和免費版的差別 ● 沒有廣告 ● 無限的功能點數 ● 增加自選股折溢價自動更新功能 如何將免費版的資料匯入捐贈版？ 使用免費版的自選股備份功能匯出自選股，匯出成功後，複製備份ID，再到捐贈版的自選股備份功能匯入自選股，貼上剛複製的備份ID後，按下確定即可恢復自選股資料。 您知道ETF的價格有分為淨值和市價嗎？ 您知道淨值和市價可能會產生溢價讓您一進場就買貴了嗎？ 快使用【台股ETF折溢價查詢】，讓您的ETF不買貴。 提供 元大、富邦、國泰、復華、群益、台新、兆豐、街口、第一、統一、中信、凱基、永豐、富蘭克林華美、大華銀、野村、玉山、聯邦、華南、安聯、聯博、摩根、貝萊德、元富、永昌所發行ETF和ETN的折溢價查詢 ETF折溢價簡單說明 ETF是掛牌在交易所的，跟一般的股票交易方式一樣，也就是說投資人並不是用淨值來交易ETF，而是隨時都會變動的市價。今天淨值100元的ETF，如果投資人買進力道高於賣出力道，就可能會願意用高於淨值的價格買進，例如101元，這就是溢價，相反的，也有可能投資人不願意用這個高的價格買進，於是只能成交在99元，這就是折價。 短期中ETF市價和淨值，可能會因投資人對ETF所追蹤的標的物熱度產生較大的折溢價。 但長期來說，ETF市價和淨值會趨於一致。 所以短期中如果某檔ETF已經溢價很多 代表投資人已經對未來的利多先做了反應 這時是否要馬上進場追買 就要把溢價部分也納入考慮了喔！ 除了折溢價外 還提供下列各項功能 ● ETF基本資料 ● ETF成分股資訊 ● ETF成分股產業分佈資訊 ● ETF三大法人買賣超資訊 ● ETF日成交量資訊 ● ETF歷年股價資訊(以歷年股價推算合理價) ● ETF歷年股利資訊 ● ETF歷年殖利率資訊 ● ETF歷年填權息資訊 ● ETF歷史績效資訊 ● ETF殖利率排行榜 ● ETF現金股利排行榜 ● ETF歷史績效排行榜 ● ETF成交量排行榜
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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
Victory Native
Axios
React Navigation
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.
