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
戏曲锣鼓 - 传统乐器新体验
戏曲锣鼓是一款为戏曲爱好者打造的虚拟乐器应用，通过这款应用在手机或平板上随时随地演奏传统打击乐器，你可以在应用中找到多种经典的锣鼓乐器，并根据你的音乐需求进行个性化演奏。本应用主要有以下特点：
$3.99 · In-app purchases
PRICE
$3.99
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 included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 戏曲锣鼓 - 传统乐器新体验: map the core Music 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
Integrate social sharing or community forums for users to interact.
Assumption to check: Limited user engagement due to lack of community features
Validate with people who use this workflow before building.
Hypothesis 2
Implement advanced search and filtering options.
Assumption to check: Difficulty in finding specific lessons
Validate with people who use this workflow before building.
Hypothesis 3
Create custom lesson plans based on user skill level.
Assumption to check: Lack of personalized learning paths
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to download any lesson for offline use.
Assumption to check: No offline access for all content
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
戏曲锣鼓是一款为戏曲爱好者打造的虚拟乐器应用，通过这款应用在手机或平板上随时随地演奏传统打击乐器，你可以在应用中找到多种经典的锣鼓乐器，并根据你的音乐需求进行个性化演奏。本应用主要有以下特点： - 简单易用，初学者友好：无论你是初学者还是戏曲爱好者，应用的操作界面简单直观，轻松上手。通过触屏操作，就能轻松掌控不同乐器，随时随地开始演奏。 - 多样化的锣鼓乐器：提供大堂鼓、小堂鼓、大锣、小锣、铙钹、板鼓、板、碰铃多种不同类型的锣鼓乐器，包括不同打击力度，满足不同戏曲流派和演奏风格的需求。 - 反应灵敏：敲击按键即响，声音不滞后，快速连续敲击不丢音，支持多点同时击打，且多点触控不串音。 - 个性化演奏设置：提供强大的自定义设置功能，根据个人喜好进行调整，可以自由设定键盘的行列数、按键名称、按键颜色、按键乐器等，打造属于你自己的专属演奏界面。每个按键最多支持添加 3 个乐器，配合修改每个按键的名称，实现自定义锣鼓经打击垫。 - 多种声音播放方式：支持蓝牙和有线连接。外接耳机，深夜使用也不怕扰民。接入有线音响或者蓝牙音响，实现声音放大的效果。 立即下载，开启你的演奏之旅！如遇到错误或提供意见与建议，请联系邮箱：[email protected]
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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
Zustand
react-navigation
expo-av
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.
