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
快手
「有趣视频，一看就上瘾」
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
37,265 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 included19 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 快手: map the core Photo & Video workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
「有趣视频，一看就上瘾」 好看的、好玩的、好笑的短视频，都在这。 「一起同框，越玩越有戏」 随时随地多人同框，搭戏模仿，有趣更有戏。 「互动直播，有你更出众」 随时随地侃大山，好看的小哥哥小姐姐都爱玩的直播在这里。 「支持原创，潇洒做自己」 脑洞大，才艺多，有绝活，给你大舞台。 「美颜滤镜，拍出你的美」 30款美颜滤镜，上百种魔法表情；要萌要酷随你变，怎么变都好看。 自动续费订阅说明 1.--订阅服务： 快手超粉团连续包月 2.--订阅价格： 金粉团：连续包月29.9元/月 钻粉团：连续包月69.9元/月 3.--付款： 确认购买后，您的iTunes账户将被收取费用，订阅将会自动续订。 4.--续订： 苹果iTunes账号将在当前订阅结束前的最后24小时里被收取续订费用，并确定续订开支。扣款成功后订阅周期顺延一个订阅周期。 5.--取消续订：如需取消订阅，请在当前订阅周期24小时前，打开苹果手机“设置”-->进入“iTunes Store 与App Store”-->点击“Apple ID”，选择“查看Apple ID”，进入“账户设置”页面，点击“订阅”，选择“快手超粉团连续包月”，取消订阅即可。 6.超粉团服务协议： https://ppg.viviv.com/doodle/YnZeNydF.html 7.超粉团自动续费协议： https://ppg.viviv.com/doodle/xaOHTsAQ.html 8.隐私政策：https://www.kuaishou.com/about/policy?tab=privacy 9.服务协议：https://www.kuaishou.com/about/policy?tab=protocol
Written user reviews are not shown here. Check current App Store reviews >
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
Simplify UI with a more guided experience.
Assumption to check: User interface can be cluttered with too many options.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize video loading and playback.
Assumption to check: App performance may lag with heavy video content.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance discoverability with improved algorithms and personalization.
Assumption to check: Difficulties in discovering new content.
Validate with people who use this workflow before building.
Hypothesis 4
Clarify subscription benefits and simplify the purchase flow.
Assumption to check: In-app purchases can be confusing or overwhelming.
Validate with people who use this workflow before building.
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
Zustand
Axios
React Navigation
Firebase
BUILD KIT DIFFICULTY
Expert
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.
