Gamdom

Win is a flashcard vocabulary app that lets you browse and switch between its 8 built-in decks at any time, giving you complete freedom to tailor your study session to your mood, goal, or available time.

Each deck is clearly labeled and immediately accessible from the main screen, so switching from the World Capitals deck to the Travel Phrases deck takes just a tap, no navigation layers or loading screens.
The app treats each deck independently in terms of spaced repetition progress, so your knowledge level data for Basic Spanish never interferes with your scores in Basic German, each deck has its own learning history.

Short on time? Pick a small deck like Science Facts (40 cards) for a quick session. Do you have more time? Work through the full Basic English deck (100 cards) in a single sitting for an intensive vocabulary push.

Win's structure encourages multi-deck study habits naturally, and the statistics screen shows your combined progress across all decks, giving you a bird's-eye view of your full learning picture.