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
竹知了 - 找回童年的快乐
轻轻点击或晃动 iPhone、Apple Watch，让竹知了沿着绳索旋转并发出独特鸣响。晃得越有力，旋转越快、声音越响；完整旋转一圈，功德 +1。
$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 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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for 竹知了 - 找回童年的快乐: map the core Entertainment 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
Competitive pricing with generous free tier
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Focus on most-requested features first
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize for 60fps, fast load times
Assumption to check: Poor performance
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
轻轻点击或晃动 iPhone、Apple Watch，让竹知了沿着绳索旋转并发出独特鸣响。晃得越有力，旋转越快、声音越响；完整旋转一圈，功德 +1。 竹知了是一款以传统民间发声玩具为灵感制作的互动 App。 真实的竹知了通过挥动手柄，让玩具沿绳索旋转并发出独特鸣响。现在，你可以在 iPhone 和 Apple Watch 上重新体验这份简单、有趣的童年快乐。 主要玩法： • 点击屏幕或晃动设备，让竹知了开始旋转 • 连续点击或持续晃动，可以不断加速 • 晃动力度越大，旋转速度和声音强度越高 • 停止操作后，竹知了会自然减速，并在重力作用下回到绳子最低处 • 支持顺时针与逆时针旋转 • 每完整旋转一圈，功德 +1 • 功德数字保存在设备本地，可以持续累计 支持 Apple Watch： iPhone 与 Apple Watch 均可独立运行。即使不打开手机，也可以直接在手表上点击或晃动，感受竹知了旋转和发声。 简单而纯粹： • 无广告 • 无需注册账号 • 无用户追踪 • 无需联网，随时可以游玩 • iPhone 与 Apple Watch 的功德分别保存在各自设备上 晃一晃，让熟悉的竹声再次响起。
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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
Supabase
RevenueCat
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.
