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
游戳记-POSTA
谁的心里没有藏着一个“走遍中国”的梦想呢？
$4.99 · In-app purchases
PRICE
$4.99
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 included15 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 游戳记-POSTA: map the core Travel 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 a clear itinerary overview with easy navigation.
Assumption to check: Users often face difficulty in tracking multiple itineraries.
Validate with people who use this workflow before building.
Hypothesis 2
Add personalized recommendations based on user preferences.
Assumption to check: Users find it hard to explore new destinations.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate social sharing features for itineraries.
Assumption to check: Limited sharing options for itineraries.
Validate with people who use this workflow before building.
Hypothesis 4
Design a simplified interface focusing on key user journeys.
Assumption to check: User experience can be cluttered with too many options.
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
谁的心里没有藏着一个“走遍中国”的梦想呢？ 如果你恰好也跟我一样，是个跑戳爱好者，每到一个城市都要去邮局盖下那个专属的印记，那么这款《游戳记》App，绝对是你实现梦想的绝佳帮手！ 它不仅仅是一个邮戳收集整理工具，更像是你走遍中国人生旅途的“探险成就手册”： 【拨开地图迷雾】 每当你收集到一个新地方的邮戳，地图上覆盖的迷雾就会随之散去。看着原本灰蒙蒙的版图在你脚下一寸寸变得清晰明亮，那种“开荒”全中国的成就感，真的会治愈强迫症！ 【点亮你的进阶成就】 从点亮一个小城，到探索完整个省份，直到最后达成【探索全中国】的终极成就。每一个邮戳都是你梦想的坐标，记录着你离那个大目标又近了一步。 【 一个纯粹的应用】 它是完全的单机版本，不需要注册，不上传你的数据，不收集任何隐私。你的足迹和回忆，全都稳稳地保存在你自己的手机里，干净又安心。 以前邮戳是散落在抽屉里里的碎片，现在，我想邀你一起，把它们连成通往星辰大海的路。 让我们一起，在地图上盖满属于自己的勋章吧！
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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
Zustand
React Navigation
React Native Maps
Axios
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.
