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
退休倒數
你想提早退休（FIRE）嗎？距離財富自由還有多遠？
$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/
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.
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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 退休倒數: 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
Create a clear onboarding process with guided tutorials.
Assumption to check: Many users find finance apps difficult to navigate.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to set unique categories and reminders for each goal.
Assumption to check: Users often want more customization for savings goals.
Validate with people who use this workflow before building.
Hypothesis 3
Implement real-time syncing with bank data for accurate updates.
Assumption to check: Common frustration with incorrect or delayed progress updates.
Validate with people who use this workflow before building.
Hypothesis 4
Provide detailed analytics and visual reports on saving trends.
Assumption to check: Limited financial insights and comparisons.
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
你想提早退休（FIRE）嗎？距離財富自由還有多遠？ 退休倒數幫你設定退休目標、追蹤資產進度、每月提醒儲蓄， 讓你每個月都能清楚看到離退休又近了一步， 一步一步實現財富自由的夢想！ 【核心功能】 • 目標計算模型 提供每月支出法、FIRE 4% 法則、提領模型或自訂金額， 找出最適合你的退休規劃方式。 • 資產追蹤 輸入股票、現金、不動產等資產，一個 app 統整淨值。 台股、美股、新加坡股市即時報價，支援即時匯率換算。 • 儲蓄計劃 設定每月儲蓄金額，搭配每月入帳提醒，系統幫你追蹤進度。 • 退休倒數 首頁根據即時股價計算退休日期，並追蹤資產成長歷史。 • 大筆支出試算 評估一筆支出會讓退休日期延後多少，幫你做出明智的消費決策。 • 通膨與房貸支援 目標金額自動納入通膨調整與退休後房貸規劃。 • 雲端同步 建立帳號後，所有設定自動同步雲端，換手機資料永不遺失。 立即下載試算你的退休日期， 或許退休比你想像的更近喔！
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.
SUGGESTED BUILD STACK
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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.
