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
Acorn TCG Card Scanner App
So you pulled a hit and you don’t know the value?
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
15,746 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.
Build your own version
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/
Preview a sample Build Kit No email needed
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 Acorn TCG Card Scanner App: 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
So you pulled a hit and you don’t know the value? Acorn is the unofficial Card Scanner for Pokémon TCG collectors and enthusiasts. Whether you're a casual collector or serious trader, you can scan and search for cards, organize your collections, and track their value. - Scan cards and check prices. - Track the completion of sets and master sets. - Create and track custom collections. - Track your cards portfolio - Export and import card collections. - Check info of +43,000 cards of International and Japanese expansions. - Multiple card scanner. - Get prices from different sources like TCGPlayer, Cardmarket and eBay. - Direct links to buy cards. - Choose from different custom app icons. Download Acorn now and start tracking your card collection! ————————————— Privacy Policy: https://www.acorntcg.com/privacy-policy Terms of Service: https://www.acorntcg.com/terms ————————————— Disclaimer: Acorn is an Unofficial independent reference application for trading card enthusiasts. All Pokémon imagery are copyrighted materials owned by The Pokémon Company International, Inc. This app is not produced, supported, endorsed, nor associated with The Pokémon Company International, Inc.
Written user reviews are not shown here. Check current App Store reviews >
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 the filtering capabilities to include additional criteria.
Assumption to check: Limited card filtering options in the current app.
Validate with people who use this workflow before building.
Hypothesis 2
Add a trading feature for users to exchange cards.
Assumption to check: No ability to trade cards within the app.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize image loading and caching for better performance.
Assumption to check: Slow loading times for card images.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce forums or chat features for users to discuss cards.
Assumption to check: Lack of user community features.
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
Zustand
React Navigation
Axios
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.
