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
CardX AI: Sports Card Scanner
cardx ai : card value scanner for you.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
495 ratings · Top 15%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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 CardX AI: Sports Card Scanner: map the core Sports 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 more robust image processing algorithms.
Assumption to check: Users find scanning accuracy inconsistent.
Validate with people who use this workflow before building.
Hypothesis 2
Expand database for better evaluations.
Assumption to check: Limited card details and evaluation metrics.
Validate with people who use this workflow before building.
Hypothesis 3
Provide clearer explanations of subscription benefits.
Assumption to check: In-app purchase process is unclear.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize data management for better performance.
Assumption to check: App can be slow with large collections.
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
cardx ai : card value scanner for you. transform the way you collect cards. cardx ai uses ai to instantly scan, identify, and value your sports cards and trading cards (tcg & sports cards). track prices in real time, explore ebay listings, and turn your collection into a powerful digital portfolio. instant card scans & real-time values - instantly scan and identify sports cards and tcg cards with advanced ai recognition - detect details including year, brand, set, and variations with high accuracy - access real-time market prices from ebay and other trusted marketplaces - scan baseball cards, basketball cards, football cards, soccer cards, hockey cards, and tcg cards like pokémon cards, magic: the gathering (mtg) cards, and yu-gi-oh! cards. ai card helper - ask ai anything about your sports cards or tcg—rarity, background info, or value insights - get instant answers to guide your collecting and trading decisions - discover card history and trends without endless searching smart collection management - replace messy spreadsheets with intuitive digital tools - create collections and wishlists for sports cards, tcg categories, players, teams, or sets - track portfolio value and monitor growth over time buying & selling made easy - explore active ebay listings directly from card details - instantly compare prices and evaluate market trends for sports cards and tcg - make confident buying and selling decisions without leaving the app why collectors choose cardx ai - ai-powered sports card and tcg card recognition - real-time pricing data from major marketplaces - tools to organize, filter, and value your collection - direct ebay integration for browsing and purchasing cards - ai chat assistant to answer card-related questions instantly - build your dream sports card and tcg collection and never miss a deal cardx ai makes card collecting smarter. whether you’re into baseball cards, basketball cards, football cards, soccer cards, hockey cards, pokémon cards, magic: the gathering (mtg) cards, or other tcg cards, cardx ai helps you scan, price, and manage your cards faster and better. turn your sports card hobby into a powerful digital portfolio today. supports all major games cardx ai recognizes and tracks a growing list of popular games: - pokémon tcg - magic the gathering (mtg) - yu-gi-oh! - digimon - disney lorcana - one piece card game - sports cards tracker for basketball, baseball, football, and more. track hot players like victor wembanyama, shohei ohtani, caitlin clark, connor bedard, and lionel messi. subscription & terms - subscriptions renew automatically unless canceled at least 24 hours before the end of the current period - you can manage or cancel your subscription anytime in your app store account settings - privacy policy: https://www.cardx.vip/privacy.html - terms of use: https://www.cardx.vip/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
Zustand
Axios
React Navigation
Expo Camera
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.
