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
玄易八字
玄易八字——專業八字排盤與命理分析工具
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
34 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 included17 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 玄易八字: map the core Utilities 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
Allow users to customize chart displays and colors.
Assumption to check: Limited customization options for Bazi charts
Validate with people who use this workflow before building.
Hypothesis 2
Provide in-depth descriptions and interpretations for each section of the chart.
Assumption to check: No detailed explanations for each trigram
Validate with people who use this workflow before building.
Hypothesis 3
Implement a guided onboarding process to educate users on features.
Assumption to check: Difficult navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Enable sharing of generated charts on social media platforms.
Assumption to check: Lack of social sharing 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
玄易八字——專業八字排盤與命理分析工具 玄易八字是一款功能強大且便捷的八字排盤工具，專為不同需求的用戶量身打造。無論您是八字命理的初學者，還是經驗豐富的命理師，我們都能為您提供精準、專業的命理分析，助您洞悉人生軌跡。 核心功能： 精準八字排盤：輸入生辰，即可一鍵排盤，精準呈現命局資訊，助您快速解讀八字奧秘。 專業斷法知識：內建豐富的八字斷法與解析技巧，幫助您深入理解命理學，提升預測能力。 多盤同批分析：支援同時解析多個命盤，輕鬆對比命理特徵，助力更全面的推斷與研究。 日曆查詢與節氣資訊：整合日曆查詢功能，可查看日干支、節氣變換等重要資訊，精準輔助命理分析。 簡潔直觀，易學易用：優化介面設計，讓複雜的八字分析變得清晰易懂，即使是新手也能快速上手。 為何選擇玄易八字？ 專業精準——演算法嚴謹，數據可靠，助您深度解讀八字奧秘。 學習提升——內建命理知識，幫助初學者快速入門，高手進階提升。 洞察人生——解讀事業、財運、婚姻等多方面命理資訊，把握人生機遇。 玄易八字，讓八字命理觸手可及，助您探索人生玄機！ 立即下載，開啟您的命理探索之旅！
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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
React Navigation
Zustand
expo-sharing
react-native-paper
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.
