App Overview

Dex - for TCG Collectors icon

Dex - for TCG Collectors

Pedro Carrasco · Reference

Dex is the ultimate unofficial app for Pokémon TCG collectors

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
14,403 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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A product spec, screen plans, and build steps for your coding agent.

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What's included17 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.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Dex - for TCG Collectors: 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

Dex is the ultimate unofficial app for Pokémon TCG collectors. Trusted by collectors since 2021, Dex lets you scan cards, track your collection, check prices, and explore every set, all in one place. • Track Your Collection Manage the cards you own down to the exact variant, and see what’s missing. • Powerful Card Scanner Snap a single card, or Sweep a whole binder page or stack in one shot. • Virtual Binders Flip through any set or folder as a binder, or build your own pocket by pocket, just like the real thing. • Build Your Pokédex Create a Pokédex binder with one card per species and track every Pokémon you’ve registered. • Complete Card Database Browse every English, Japanese, and Simplified Chinese set, plus cameos: Pokémon hiding in the artwork of other cards. • Insights See your progress, your collection’s value, your priciest cards, and breakdowns by type, rarity, and more. • Card Values & Market Prices Prices from TCGplayer, Cardmarket, eBay, and CardTrader, free for everyone. • Folders & Organization Create custom folders for trades, favorites, duplicates. You decide. Start one empty, or from any expansion or Pokémon. • Build Decks Design decks with powerful tools like hand simulators and draw odds. • Card Notes Write down important details like how much you paid for a card, where you got it, who you got it from, and anything else you’d like to remember. • Friends & Trading Share your collection with a link anyone can open, compare cards with friends, and see who has the cards you need. • Badges Earn badges as your collection grows. • Advanced Search & Filters Find cards by name, artist, type, rarity, and more. • Personalization Choose between light & dark themes, pick how owned cards look, and add custom widgets. Whether you’re a collector or just getting started, Dex helps you scan, sort, and showcase your physical Pokémon TCG collection like never before. Download Dex now and upgrade your collecting experience! • • • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ • • • Contact us: [email protected] About Dex+: If you subscribe to any Dex+ plan, payment will be charged to your Apple Account, and your subscription renews automatically unless turned off at least 24 hours before the end of the current period. You can choose to be billed monthly or yearly. You can turn off automatic renewal in your Apple Account settings any time after purchase. • • • Disclaimer: The text and imagery related to the Pokémon Trading Card Game, including card images, are copyrighted materials owned by The Pokémon Company. Please note that Dex is an independent application and is neither produced, endorsed, supported, nor associated with The Pokémon Company.

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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 advanced filters and sorting by rarity, value, or set.

Assumption to check: Limited card search and filtering options

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the subscription process and provide clear benefits for each tier.

Assumption to check: In-app purchase processes can be confusing

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 image-heavy pages

Validate with people who use this workflow before building.

Hypothesis 4

Introduce social features like sharing collections and connecting with other collectors.

Assumption to check: Limited community features for collectors

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
Zustand
Supabase
Axios
React Navigation
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.