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
KK键盘-语音变声字体美化表情包输入法
====== 特色功能 ======
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
538 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 included18 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 KK键盘-语音变声字体美化表情包输入法: map the core Social Networking 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
Offer customizable themes and layouts.
Assumption to check: Limited customization options for keyboard appearance
Validate with people who use this workflow before building.
Hypothesis 2
Integrate more voice effects and customization.
Assumption to check: Lack of advanced voice modulation features
Validate with people who use this workflow before building.
Hypothesis 3
Implement a more intuitive emoji search and categorization.
Assumption to check: Emoji selection can be cumbersome
Validate with people who use this workflow before building.
Hypothesis 4
Optimize app performance for a wider range of devices.
Assumption to check: Inconsistent performance on older devices
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
====== 特色功能 ====== •【文字转语音】输入文字即可变声，熊猫人、夹子音、病娇音等百款音色可选，爆款变声音频发源地 •【语弹-一键连发免打字】连发刷屏，扣字怼人，游戏特殊代码，表白套路，追星打榜，手残党福音，游戏键盘必备 •【语音包】主播同款吃鸡语音包，恶搞神器，一键变声，网恋必备 •【斗图表情包】打字自动配表情，接入百万表情包资源，帮你告别无趣 •【键盘皮肤】动漫人物、明星爱豆、游戏同款、万款皮肤可挑，支持自定义 •【花样字体】可在QQ微信，抖音快手，打出特殊字体，各种DIY网名，让你在朋友圈做最靓的崽 •【恋爱话术】高情商回复神器，自动回复 •【剪贴板】不折叠朋友圈，防折叠助手，不折叠输入法 【KK会员自动续费订阅说明】 1、订阅服务：月度KK会员自动续费（1个月）,季度KK会员自动续费（3个月） 2、订阅价格：月度KK会员，自动续费为6.8元/月，季度KK会员，自动续费为16.8元/季 3、自动续费：购买连续订阅会员的帐号，会在每个季度到期前24小时，自动在iTunes账户扣费并延长会员有效期。 4、关闭服务：如需取消订阅，请手动打开iOS的“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KK会员自动续费取消订阅即可。如未在订阅期结束的至少24小时前关闭订阅，此订阅将会自动续订。 5、服务协议：https://kkmob.weshineapp.com/userAgreement?navBar=false 6、隐私协议：https://kkmob.weshineapp.com/privacy?navBar=false 关于KK，想吐槽、想建议、想玩耍，or手把手教你如何使用，来K友交流QQ群:115648327 安利KK键盘:主程序->我的->分享给好友 ***郑重声明:KK键盘为各应用市场认证软件，不会收集任何用户密码信用卡等敏感信息，请放心使用。
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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.
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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.
