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
TCG Value Scanner: Card Guide
The Fastest AI Card Scanner and Grader
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
30 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 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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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 TCG Value Scanner: Card Guide: map the core Reference 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
Implement a more intuitive navigation system with clear paths between features.
Assumption to check: Users find it difficult to navigate between scans and collections.
Validate with people who use this workflow before building.
Hypothesis 2
Offer comprehensive card details and sourcing for values.
Assumption to check: Lack of detailed card descriptions affects user trust.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate user feedback mechanisms to ensure real-time value adjustments.
Assumption to check: Occasional inaccuracies in card values.
Validate with people who use this workflow before building.
Hypothesis 4
Expand sharing capabilities to include social media and messaging apps.
Assumption to check: Limited sharing options for card details.
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
The Fastest AI Card Scanner and Grader Turn your phone into a professional card appraiser. TCG Value Scanner helps you identify, grade, and track your trading cards in seconds using advanced AI. SCAN AND IDENTIFY Point your camera at any card to instantly recognize it. We support all major TCGs and Sports: - TCG: Pokemon, Magic: The Gathering (MTG), Yu-Gi-Oh!, One Piece, Lorcana, and more. - Sports: Baseball, Basketball, Football, Soccer, Hockey (Topps, Panini). AI CONDITION GRADING Stop guessing the grade. Our AI analyzes your card’s condition (centering, edges, surface) to give you an instant estimate - from Poor to Gem Mint. LIVE MARKET PRICES Get accurate, real-time values. We pull data from top marketplaces like TCGPlayer and eBay to show you what your cards are actually worth today. SUBSCRIPTION INFORMATION Upgrade to Premium for unlimited scans, advanced AI grading reports, and full portfolio analytics. Subscription payments will be charged to your App Store account at confirmation of purchase. Subscriptions will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period. Privacy Policy: https://tcgvaluescanner.com/privacy.html Terms of Service: https://tcgvaluescanner.com/terms.html
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
expo-camera
Zustand
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.
