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
MineSkin PRO
Your skin, perfected in 3D.
$1.99 · In-app purchases
PRICE
$1.99
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 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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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 MineSkin PRO: map the core Graphics & Design 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
Add social sharing and interaction features.
Assumption to check: Limited community engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Provide templates and tutorials for new users.
Assumption to check: Difficulty in skin creation for beginners
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate gamification elements to keep users engaged.
Assumption to check: Potential for low user retention
Validate with people who use this workflow before building.
Hypothesis 4
Offer more tools and features for detailed skin editing.
Assumption to check: Lack of customization options for skins
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
Your skin, perfected in 3D. MineSkin is a skin editor with a real-time 3D viewer. Compatible with popular block games. Draw pixel-by-pixel, preview your skin from every angle, and watch it come to life with animations, all in one app. See every detail Rotate, zoom, and inspect your skin from any angle. Fine-tune lighting direction, intensity, and shine to see exactly how your skin will look in-game. Draw with precision Pixel-perfect tools for every workflow — pen, bulk paint, eraser, and a variation tool for adding depth and shading. Pick colors straight from the 3D model with the eyedropper. Watch it move Preview your skin with idle and walking animations before you ever load it in game. Edit any layer Toggle between base and overlay layers on all six body parts. Support for both classic and slim arm models. Features - Real-time 3D preview with orbit camera - Pen, bulk paint, eraser, and shading tools - Eyedropper color picker from the 3D model - Adjustable lighting (directional, ambient, diffuse, specular) - Idle and walking animation preview - Base and overlay layer editing for all 6 body parts - Classic and slim arm support - 64x64 and legacy 64x32 skin formats - Unlimited undo/redo - Grid overlay for pixel-perfect alignment - Works offline - 5 languages (English, Arabic, Chinese, Spanish, Portuguese) - Dark mode
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
Zustand
react-native-reanimated
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.
