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
下一站NextStop
NextStop 是一款轻量、安静的个人记录工具，用来保存那些还没有完全告别的人、物品和情绪。
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 下一站NextStop: map the core Lifestyle 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
Incorporate user reviews and ratings for destinations.
Assumption to check: Limited destination information and user-generated content
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the paywall and provide clear benefits of premium features.
Assumption to check: In-app purchase process can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Implement AI-driven suggestions based on user preferences.
Assumption to check: Lack of personalized recommendations
Validate with people who use this workflow before building.
Hypothesis 4
Enable offline capabilities for trip itineraries.
Assumption to check: No offline access to itineraries
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
NextStop 是一款轻量、安静的个人记录工具，用来保存那些还没有完全告别的人、物品和情绪。 你可以把一件物品、一个人或一段回忆放进站台，为它写下名称、备注和照片。等到真正准备放下时，再为它选择目的地并发车。NextStop 会把这些记录整理成清晰的站台、车票、后视镜和小组件，让告别不再只是突然删除，而是一个可以被看见、被完成的过程。 主要功能： 记录暂时舍不得放下的人或物 为每条记录添加备注、照片和分类 用“发车”完成一次告别 在后视镜中回看已经出发的记录 支持桌面 Widget 查看站台状态 支持 Live Activity 展示发车进程 支持 iCloud 在你的设备之间同步数据 NextStop 不追求复杂的清单管理，也不是社交产品。它更像一个私人站台：安静、克制，只服务于你自己的整理和告别。 适合这些场景： 想整理旧物，但不想立刻删除记忆 想记录一段关系或情绪的结束过程 想用更温和的方式完成断舍离 想把“放下”变成一个具体、可见的动作 你的记录默认保存在本地。若启用 iCloud，数据会通过 Apple CloudKit 同步到你的私人 iCloud 数据库中。
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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
Firebase
Axios
Zustand
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.
