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 Card Scanner - FoilSnap
Stop guessing
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
15,068 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 Card Scanner - FoilSnap: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Stop guessing. Start snapping. Whether you’re a dedicated Pokémon master, a seasoned Magic enthusiast, or a legendary Duelist, FoilSnap is the ultimate digital companion for your hobby. We’ve built the fastest, most accurate AI-powered scanner to help you identify cards, check market prices, and organize your collection in seconds. FoilSnap turns your camera into a professional grading and valuation tool, ensuring you never miss the true price of a rare find. KEY FEATURES: Instant AI Scanning: Our advanced image recognition identifies cards instantly. Decode issuing game, year, card type, and backstory with a simple scan. Precise Market Valuation: Stay ahead of the market. We pull live data from top marketplaces to give you the accurate card price for every scan. Foil & Variant Detection: Unlike basic scanners, FoilSnap automatically detects if a card is a Foil or not, matching it to the correct premium price tier. Multi-Genre Support: Manage your entire collection in one place. FoilSnap supports collectors of major TCGs like Magic, Pokémon, Yu-Gi-Oh!, and more. Grading Assistant: Get a "pre-grade" estimate before you ship to PSA or BGS. Track centering, corners, and surface quality with our digital magnifying tool. Portfolio Analytics: Watch your collection’s total price and value grow. Why Collectors Love FoilSnap The "Foil" Advantage Standard scanners often misidentify cards because of holographic glare. It distinguishes between a standard card and its holographic counterpart, ensuring the price you see reflects the actual card in your hand. Price Tracking Never leave money on the table at a trade. Instantly check the price of any card in your inventory. Whether you are buying, selling, or trading, you’ll have the up-to-date market price data at your fingertips. Your Vault in Your Pocket Never buy a duplicate by mistake again. Access your entire inventory at trade shows, local game stores, or while browsing the web. Save scans, monitor prices, and track your collection's growth. FoilSnap provides price guide data and organization for fans of Magic: The Gathering (MTG), Pokémon, Yu-Gi-Oh!, MetaZoo!, and many other trading card and hobby franchises. Premium Subscription Upgrade to Premium for limitless identifications, exclusive market insights, and priority user support. - Payment will be charged to your iTunes Account upon purchase confirmation - Subscription auto-renews unless canceled at least 24 hours before the current period concludes - Account will be charged for renewal within 24 hours before the current period concludes - Any unused portion of a free trial, if presented, will be forfeited upon subscription purchase - Users may manage subscriptions and can turn off auto-renewal in iTunes settings Terms of Use: https://app-service.tcgcardworth.com/static/user_agreement.html Privacy Policy: https://app-service.tcgcardworth.com/static/privacy_policy.html
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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 database with community contributions and user uploads
Assumption to check: Limited card database for identification
Validate with people who use this workflow before building.
Hypothesis 2
Implement better image processing algorithms for improved scanning
Assumption to check: Scanning can be inaccurate in poor lighting
Validate with people who use this workflow before building.
Hypothesis 3
Offer more free features or limited-time access to premium features
Assumption to check: Subscription model may deter casual users
Validate with people who use this workflow before building.
Hypothesis 4
Integrate articles or videos for educating users on card collecting
Assumption to check: Lack of educational content about card rarity and values
Validate with people who use this workflow before building.
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
TypeScript
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.
