Intro to Decks

Decks are the primary way of organizing cards in Mochi. Every card belongs to a deck, and decks can be grouped into larger hierarchies to fit the structure of your study or knowledge system. Decks also hold settings, templates, and views that apply to the cards inside them.

This page introduces how decks work, how to organize them, and what you can customize.

What is a deck?

A deck is a collection of cards—similar to a folder. Decks help you group related information, such as:

• A language course (e.g., “Japanese N5”)
• A set of lecture notes (“Biology 101”)
• A thematic area (“Programming Concepts”)
• A project or long-term knowledge area

Every card must be placed inside a deck. Decks can also contain subdecks, letting you build a hierarchy that fits your workflow.

Deck hierarchies

Decks can be nested inside one another:

Biology
 ├── Chapter 1
 │    ├── Unit 1
 │    └── Unit 2
 ├── Chapter 2
 └── Plants
      ├── Photosynthesis
      └── Anatomy

Hierarchies help you:

• Break large subjects into smaller chunks
• Keep related material together
• Apply settings or templates to specific sections
• Organize information the same way you think about it

Subdecks inherit certain properties (such as review settings) from their parent decks, unless overridden. It is also possible to show cards from subdecks on the parent deck's page.

Deck settings

Each can deck have preferences and review settings that shape how you study and interact with the cards in your deck. These may include:

• Daily limits for new cards
• Scheduling preferences
• Appearance (font size, style, etc)
• Card display (showing all sides on the deck page, etc.)

Deck settings allow different decks to behave differently. For example, a deck that stores notes might use the Column view layout and be archived, while a deck used for studying flashcards might choose the Grid view with a custom template.

Views

Views

Templates

Templates

Sharing

Sharing

Archiving

Decks can be archived, which removes all of their cards from the review schedule:

• Archived decks do not show new cards
• Archived decks do not show due cards
• Archived cards preserve their review history
• Cards remain intact and editable
• You can unarchive the deck anytime

Archiving is ideal when:

• You’ve finished a course
• You want to pause studying a subject
• The deck is for reference only

See Archiving cards and decks for details.

Moving, renaming, and deleting decks

Decks can be reorganized at any time:

• Move a deck into another deck
• Rename decks without affecting cards
• Delete a deck (moves its cards to the trash)
• Restore from trash if needed

Deleting is permanent once the trash is emptied, so consider exporting or archiving before removing a large deck.