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
Mike是麥克
Mike是麦克介紹｜美籍华人，全球旅居者
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 2.3
3 ratings · Below Average
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 included18 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 Mike是麥克: 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
Add comprehensive reports and visualizations for spending.
Assumption to check: Lack of detailed analytics and reporting features
Validate with people who use this workflow before building.
Hypothesis 2
Focus on a more modern interface with better navigation.
Assumption to check: Poor user reviews regarding UI/UX
Validate with people who use this workflow before building.
Hypothesis 3
Implement multi-currency support and more account types.
Assumption to check: Limited support for currencies and accounts
Validate with people who use this workflow before building.
Hypothesis 4
Provide clear explanations and value for each subscription tier.
Assumption to check: Subscription model may confuse users
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
Mike是麦克介紹｜美籍华人，全球旅居者 ◼ 2018年：开启美股投资之旅，成为特斯拉（TSLA）早期投资者之一。 ◼ 2022年：通过投资美股，4年内实现数倍资产增值，成功达成财务自由。 ◼ 2023年：创立个人YouTube频道，积累15万订阅者，建立专属美股操作会员社群，目前已有超过2,000人加入。 ◼ 2024年：推出【MIKE是麦克】APP，分享个人在美股投资的策略与见解。 產品特色功能： 1.麦可ETF：订户专享，分享麦可最新持仓清單 2.抄底策略：一秒抓出短线超跌股，掌握低价布局暴富机会 3.存股策略：精选高股息、低估值绩优股，被动收入躺着领 4.財報日程：实时掌握最新財報时程，关键信息不再错过 5.市盈趋势：一眼判断公司股价位阶，精准把握进出场时机 6.学习专区：订户专享，每月至少 1 篇文章 + 1 部视频，分享投资见解！ 7.专属社群：订户专享，投資疑惑麥可親自為您解答
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
Zustand
React Navigation
React Native Reanimated
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.
