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
药叮当
药叮当是一款简单好用的个人健康记录工具。
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included16 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 药叮当: map the core Medical 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 a calendar view for medications and reminders.
Assumption to check: Users have difficulty keeping track of multiple medications and their schedules.
Validate with people who use this workflow before building.
Hypothesis 2
Provide detailed medication information and side effects.
Assumption to check: Lack of personalized medication information.
Validate with people who use this workflow before building.
Hypothesis 3
Clearly explain premium features and offer a free trial.
Assumption to check: In-app purchases can be confusing.
Validate with people who use this workflow before building.
Hypothesis 4
Implement customizable notification settings for reminders.
Assumption to check: Poor notifications for medication reminders.
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
药叮当是一款简单好用的个人健康记录工具。 【核心功能】 • 用药提醒 — 设定早中晚提醒，不再忘记吃药 • 饮水记录 — 一键记录每次饮水量，轻松达成每日目标 • 排尿记录 — 追踪排尿次数，关注泌尿健康 • 历史查询 — 自由选择日期范围，查看任意时段记录 【简单易用】 界面清爽，操作直观，三秒完成一次记录。数据全部存储在本地，无需注册，完全保护隐私。 适合需要长期服药、关注日常健康的用户。 英文（English）- Promotional Text Stay on track with your meds, water, and health — one tap at a time. （English）- Description YaoDingDang is a simple, privacy-first health tracking app. WHAT IT DOES • Medication reminders — morning, noon, and evening alerts so you never miss a dose • Hydration tracking — log water intake with one tap and hit your daily goal • Urination log — monitor bathroom visits to stay aware of your urinary health • History view — browse records by custom date range, tap any day for full details SIMPLE BY DESIGN Clean interface, quick to use. All data stays on your device — no account needed, no data shared. Built for anyone managing long-term medication or tracking daily health habits.
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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
Supabase
React Navigation
Zustand
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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.
