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
论子平-论八字(实用)
论八字(iCalc8Words)是一个计算八字的算命软体。根据输入的西历或农历时间, 排出命主的八字资讯, 大运, 小运, 流年, 空亡, 胎息, 胎元, 命宫及五行信息等;细盘功能(四柱, 当前大运, 流年盘);二十八宿信息。,
$12.99 · In-app purchases
PRICE
$12.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
5 ratings · Top 15%
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/
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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 论子平-论八字(实用): 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 community features or discussion boards.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Offer more flexible pricing tiers or a freemium model.
Assumption to check: High subscription cost
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize charts or receive tailored readings.
Assumption to check: Lack of personalization options
Validate with people who use this workflow before building.
Hypothesis 4
Implement a guided onboarding process to help new users navigate the app.
Assumption to check: Inadequate onboarding experience
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
论八字(iCalc8Words)是一个计算八字的算命软体。根据输入的西历或农历时间, 排出命主的八字资讯, 大运, 小运, 流年, 空亡, 胎息, 胎元, 命宫及五行信息等;细盘功能(四柱, 当前大运, 流年盘);二十八宿信息。, 该版本免除广告。 本软体主要是提供给对道家和玄学有一定研究或者兴趣的人士学习实践之用。软体在推出后, 得到东南亚, 香港, 台湾和中国内地用家的多方面好评, 结果也经过实践检验, 具有一定的准确性, 本著推广交流的目的, 也希望得到更多用家回馈意见。 软体主要功能包括: -- 对命例的资料做删除或者修改; -- 支援夜子时的处理手法及偏好设置; -- 年月日时柱排列从左到右的可选; -- 强大实用的细盘功能,大运和流年互相关联,点击大运流年可以互动大运未起以小运代替,小运和流年互相关联; -- 袁天罡称骨; -- 生肖以立春或农历年为标准选项; -- 盘面五色显示,五行属性及力量对比更加突出; -- 细盘支持流月五色显示; -- 命例资料支持公历,农历及四柱输入;支持年份1600-2200; -- 包含《三命通会》《神峰通考》等相关评语; -- 可通过iTunes备份和恢复数据； -- 各版本资料可共用; -- 命例可资料查询; -- 支持简繁中文。
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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
Supabase
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.
