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
订阅雷达 - 隐私订阅追踪器
你是否也曾被"忘记取消的免费试用"坑过？是否每月看着账单才发现多了一堆自动扣款？
$9.99
PRICE
$9.99
No 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 included
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 订阅雷达 - 隐私订阅追踪器: 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 reminder notifications for upcoming renewals.
Assumption to check: Users often forget subscription renewals
Validate with people who use this workflow before building.
Hypothesis 2
Provide visual analytics for total expenses over time.
Assumption to check: Difficulty in tracking total subscription costs
Validate with people who use this workflow before building.
Hypothesis 3
Integrate with Plaid for automatic transaction fetching.
Assumption to check: Lack of integration with bank accounts for automatic tracking
Validate with people who use this workflow before building.
Hypothesis 4
Add automatic categorization based on transaction data.
Assumption to check: Users may struggle with categorizing subscriptions
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
你是否也曾被"忘记取消的免费试用"坑过？是否每月看着账单才发现多了一堆自动扣款？ 【超80%用户至少有过一次意外扣款经历】 你每月有多少个订阅在悄悄扣款？3个？5个？还是12个？ 订阅雷达帮你一目了然： ◆ 自动计算每月总支出，再也不会超预算 ◆ 到期前智能提醒，别忘了取消不再需要的服务 ◆ 免费试用追踪，试用结束前自动提醒 ◆ 隐私优先：所有数据只存储在你的设备和 iCloud 中，绝不上传服务器 【用户真实评价】 "用了订阅雷达才发现我每月有6个订阅在扣款，取消2个就省了¥200/月" — 王先生 "试用提醒救了我，差点忘了取消那个¥388/年的AI工具试用" — 李女士
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-native-gesture-handler
expo-router
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
