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
8684实时公交Lite - 全国掌上公交地铁离线查询
在这个瞬息万变的市场，8684实时公交APP我们积累了五千万用户量，给万千用户带来了第一手公交数据和便捷的出行生活。
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included15 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 8684实时公交Lite - 全国掌上公交地铁离线查询: map the core Navigation 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 more offline map features and details.
Assumption to check: Limited offline functionality
Validate with people who use this workflow before building.
Hypothesis 2
Implement faster backend queries and caching.
Assumption to check: Slow search results
Validate with people who use this workflow before building.
Hypothesis 3
Integrate voice navigation for a hands-free experience.
Assumption to check: Lack of voice navigation
Validate with people who use this workflow before building.
Hypothesis 4
Create a more unified design across the app.
Assumption to check: Inconsistent user interface
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
在这个瞬息万变的市场，8684实时公交APP我们积累了五千万用户量，给万千用户带来了第一手公交数据和便捷的出行生活。 为回馈用户，在我们的深思熟虑下，保留了8684实时公交APP中最简单的、也是最核心的功能，推出了8684公交Lite版。 当您购买了8684公交Lite版，便可终身享受无广告、无登录带来的便捷体验。还有以下核心功能： -【换乘查询】 支持地点之间的乘车方案查询，我们一直致力于为您提供更快捷的方案； -【线路站点信息查询】 遍布全部各大城市的数据管理员，为APP源源不断提供第一手公交信息。 -【离线数据包】 离线数据查看功能，让您在无网络的情况下也能查询公交。 使用过程中若有建议或意见，欢迎反馈给我们。 官方公众号：hi8684
Written user reviews are not shown here. Check current App Store reviews >
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
@react-native-community/geolocation
expo-camera
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.
