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
钦天明时
全国首创——高精度天文时钟与万年历合二为一！
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.0
4 ratings · Below Average
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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What's included19 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 钦天明时: map the core Reference 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
Enhance content depth and variety with more astrology insights.
Assumption to check: Limited features and information compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Design a cleaner, more accessible UI.
Assumption to check: Poor user interface and readability
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance and loading speeds.
Assumption to check: Inconsistent performance and loading times
Validate with people who use this workflow before building.
Hypothesis 4
Integrate more social sharing capabilities.
Assumption to check: Limited sharing options for fortunes
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
全国首创——高精度天文时钟与万年历合二为一！ 本App采用现代精密天文算法打造，除常规的时钟与日历功能以外，更提供日月行星方位及出没时刻、以及日月食、行星合冲等天象的推算与演示等功能，有效时间跨度长达16000年，是天文观测、历史与民俗文化研究、测绘、航海、科普教育等诸多应用的得力助手。 · 两种时钟界面，可分别以现代通用的24小时制以及中国传统的十二时辰制、百刻制、更点制三种计时法展现当前时间 · 世界时钟功能，可换算全球438座城市的时间，以及查看全球的昼夜分布 · 天象演示功能，可直观动态演示太阳、月亮、各大行星、以及主要恒星与星座的运行，可以地心（当地上空）与日心（太阳系）两种视角呈现，可查阅详细的方位、躔度数值，可对任何时刻的天象作3D立体模拟演示，还可利用AR增强现实技术直观寻看空中各天体、星座实时位置，此外更可跟踪包括中国空间站和国际空间站在内的19颗主要人造卫星于前后各7天内的运行动态 · 报时功能，除可设置整点、半点、每刻报时外，更可设置日出、日落和夜间换更报时，生动还原古代“晨钟暮鼓”场景，弘扬中华传统文化，还可设置在每年元旦、春节零点整播放钟楼钟声与焰火礼花音效，为新年增加喜庆气氛 · 具注万年历，提供公元前6000年至公元10000年的公历、农历以及三种少数民族历法（藏历、回历、傣历）精确历日，其中藏历、傣历万年历系首创，此前尚无先例 - 五历日期对照、二十四节气与杂节、干支、生肖、星座、中外各民族节日、历史上的今天等信息一应俱全 - 内置齐全的历代农历实历历谱数据，准确还原古代农历历日，与史书记载完美吻合，同时包含详细齐全的中国历朝年号数据，可胜任历史研究用途 - 内置《老黄历》，涵盖民间农历历书中各种常见历注，方便民俗文化研究 - 内置《天文星历》，可查询公元前6000~公元10000年间任意一日太阳、月亮、各大行星躔度、太阳所在星座、月相、日月食、行星相位、日月升落时刻等天象数据，以及国内13座沿海主要港口城市（大陆12座+香港）潮汐情况 · 内置《天文知识小百科》，涵盖基础天文学知识的各个方面，对广大群众尤其是青少年儿童的天文科普教育具有相当大的参考价值 下载安装后初始为标准版，天体方位角度、天象时刻显示精确到分，专业版提供更高精度，显示精确到秒。欢迎各位用户付费升级，以答谢和资助作者的研发工作。 专业版升级通过应用内购买方式销售，请在 App 中“设置-关于应用”页内点击“购买专业版”按钮，按照提示即可完成付款升级。 本 App 支持 iPhone 6s 及更新机型（第一代 iPhone SE 因屏幕过小除外）以及 iPad ，兼容 iOS 12 及更高版本操作系统。 古人云“圣人千虑，必有一失”，限于作者专业水平，本 App 难以绝对排除存在疵误的可能性，如果在本 App 中发现任何 BUG 或数据误差，欢迎您及时与作者联系以帮助纠正，感激不尽！ 青年互联网程序员 业余天文爱好者 相 翔 谨制 版权所有 © 2019-2025 中国 · 山东 · 青岛 联系方式： 电话 (151) 6667-9557 （微信关联手机号同此） 微信 petermcxiang070010 （网名：祥星高照） 邮箱 [email protected] [email protected] [email protected]
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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
Axios
Zustand
React Navigation
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BUILD KIT DIFFICULTY
Advanced
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.
