To understand how Dex reads and organizes cards, it helps to first understand the structure of a standard Pokémon TCG card.
We recommend having a few physical cards on hand while reading this guide:
- A Pokémon card (Basic or Evolution)
- A Trainer card (Supporter or Stadium for variety)
- A Basic Energy card
- Two variants of the same card (e.g., normal and reverse holo)
You may also want to visit this helpful video overview
Core Elements of a Pokémon Card
Every Pokémon card contains several key elements that Dex uses when identifying and cataloguing your collection:
- Card Name: Located at the top left.
- Card Number / Set Total: Found at the bottom (e.g., 17/198).
- Illustrator: Displayed at the bottom, prefixed by Illus.
- Rarity Symbol: Found next to the number:
- ○ Common
- ◆ Uncommon
- ★ Rare (with variations for Ultra Rare, Secret Rare, etc.)
For more details on rarity and card structure, we recommend this video.
Card Types
There are three primary card types in the Pokémon TCG, each with different attributes.
Pokémon Cards
Include the card’s name, HP, energy type, stage (Basic, Stage 1, Stage 2), attacks, abilities, and sometimes special rules (ex, V, VMAX, etc.).
Trainer Cards
Used for support and utility, and come in four categories:
- Item
- Supporter
- Stadium
- Tool
Energy Cards
Provide the energy required for Pokémon attacks.
- Basic Energy: Grass, Fire, Water, Lightning, Psychic, Fighting, Darkness, Metal, Fairy, Dragon, Colorless
- Special Energy: Provide bonus effects or special interactions
Card Variants
Many cards appear in multiple versions. Dex supports and tracks them individually:
- Normal: Non-foil version
- Reverse Holo: Foil background, non-foil artwork
- Holo: Foil artwork (usually for rares)
- Other Variants: Cosmo holo, World Championships prints, etc.
Tracking variants helps you follow progress toward full or master sets.
Expansions
Pokémon cards are organized into expansions and series. Dex uses this structure to help you search, sort, and track set completion.
What Are Expansions?
Expansions (or “sets”) are groups of cards released together as part of a larger series (e.g., Sword & Shield, Scarlet & Violet).
Each expansion has:
- A unique symbol
- A standard abbreviation (e.g., Scarlet & Violet—151 → 151)
- A fixed card list with numbered entries (e.g., 1/198, 2/198)
Expansions introduce new mechanics, Pokémon, and Trainer cards. Dex uses these identifiers to organize your collection and track your progress.
To learn more, we recommend this video.
Master Sets
A Master Set includes every version of every card in an expansion, including:
- All default prints
- All reverse holos
Dex tracks your Master Set progress by treating each variant as its own collectible entry.
For more details, please check this video.
Complete Sets
A Complete Set requires only one version of each card in the expansion. For example, if a card has both a normal and a reverse holo print, owning either one marks it as complete.
Most collectors use this method when filling out new sets, as it provides a clear and achievable starting goal.
Wrapping Up
Understanding how cards, variants, and expansions are structured is key to getting the most out of Dex. Once you’re familiar with how cards are organized and how sets are defined, Dex can track your progress with precision, whether you’re working toward a complete set, a full master set, or just cataloguing your favourite cards.
With this foundation in place, you’ll be able to use Dex’s tools more effectively, explore your collection with confidence, and enjoy a smoother collecting experience overall. If you have any questions or run into issues, we’re always here to help.