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
Lumin - AI Partner
Lumin - Your AI Companion & Image Analysis Tool
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.6
7 ratings · Top 50%
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/
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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 Lumin - AI Partner: map the core Lifestyle 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 AI responsiveness and engagement.
Assumption to check: Limited AI interaction capabilities
Validate with people who use this workflow before building.
Hypothesis 2
Implement a consistent design language.
Assumption to check: Inconsistent UX across screens
Validate with people who use this workflow before building.
Hypothesis 3
Create a comprehensive onboarding tutorial.
Assumption to check: Insufficient onboarding process
Validate with people who use this workflow before building.
Hypothesis 4
Improve visibility of subscription benefits.
Assumption to check: Monetization is not clearly communicated
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
Lumin - Your AI Companion & Image Analysis Tool Transform your daily interactions with AI-powered conversations and instant image analysis. Lumin combines intelligent chat companions with powerful image recognition in one elegant app. Key Features: Custom AI Characters Create and personalize your own AI companions. Design unique characters with custom names, avatars, and personalities. Chat naturally with your AI friends for learning support, daily companionship, or life advice. Intelligent Conversations Engage in meaningful text conversations with your AI characters. Ask questions, seek guidance, or simply enjoy friendly chats. Each character has its own personality and expertise. Instant Image Analysis Upload any image and get instant AI-powered analysis. Extract text from documents, identify scenes and objects, or get detailed descriptions. Perfect for quick information extraction and scene recognition. Complete Chat History Never lose a conversation. All your chats and image analyses are automatically saved and easily accessible. Review past interactions anytime. Beautiful, Intuitive Interface Enjoy a clean, modern design with smooth navigation. The app is built for efficiency and ease of use, letting you focus on what matters. Flexible Access Choose between coin-based usage or VIP subscription for unlimited access. Start with free coins and upgrade when you need more. Perfect for: Students seeking homework help and study support Professionals needing quick image text extraction Anyone looking for an AI companion for daily conversations Users who want fast, accurate image analysis Download Lumin today and experience the future of AI interaction. Simple, powerful, and always at your fingertips. Subscribe to VIP and enjoy all functions without consuming coins Subscription Plans: Monthly: $24.00/month Half-Yearly: $96.00/6 months Yearly: $160.00/year Subscription Terms: https://docs.google.com/document/d/1xweWUzGVDjqFhclZT7RSSQBrf-u7KLMMHyuZPEUpjLo/edit?usp=sharing Terms of Service： https://docs.google.com/document/d/1iV2tvdPjKJ3ghhLU8gfQVOD0gGkiFVMCsMvsUWBnHu4/edit?usp=sharing Privacy Policy: https://docs.google.com/document/d/1G_xIE-xDzU5LKMQGFwC_ZN1qn1yxSy239LdrzCceA84/edit?usp=sharing
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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 Navigation
Axios
Zustand
Expo Image Picker
React Native Reanimated
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.
