Installing a deck adds its words to your daily new-card pool. Uninstalling pauses new words from that deck — cards already in your queue keep getting reviewed.
JLPT N5
Beginner — most basic vocabulary
0/718 learning
0%
JLPT N4
Upper-beginner
0/666 learning
0%
JLPT N3
Lower-intermediate
0/2140 learning
0%
JLPT N2
Upper-intermediate — formal/written
0/1905 learning
0%
JLPT N1
Advanced — academic/literary
0/2699 learning
0%