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
四维记账
四维记账 - 按人生维度管理你的每一分钱
$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 included14 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 四维记账: 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
Implement automatic transaction categorization and bank linking to simplify input.
Assumption to check: Users often find expense tracking tedious and time-consuming.
Validate with people who use this workflow before building.
Hypothesis 2
Include interactive charts for better financial insights.
Assumption to check: Lack of visual analytics makes it hard to assess spending habits.
Validate with people who use this workflow before building.
Hypothesis 3
Add customizable bill reminders to keep users informed.
Assumption to check: Inadequate reminders for bill payments lead to missed deadlines.
Validate with people who use this workflow before building.
Hypothesis 4
Provide CSV or PDF export options for users to easily share and analyze their data.
Assumption to check: Limited export options for financial data.
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
四维记账 - 按人生维度管理你的每一分钱 传统的记账方式让人疲惫于细分无穷的类别。四维记账换一种思路：用「 生存、社交、享受、成长」四个维度来记录每一笔支出，让你更清晰地看 见钱都花在了哪里。 【四个维度】 • 生存：日常必需，温饱无忧 • 社交：人情往来，连接世界 • 享受：偶尔放纵，活在当下 • 成长：投资自己，拥抱未来 【月度预算】 固定支出：每月必须支出的项目 灵活支出：剩余可自由支配的金额 【月度统计】 按维度查看支出占比，了解消费结构 【资产负债】 追踪资产与负债，净资产心中有数 所有数据本地存储，隐私安全。
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
React Native
Expo
Supabase
react-navigation
react-native-chart-kit
react-native-elements
BUILD KIT DIFFICULTY
Starter
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.
