DER DIE DAS is a free app that teaches German noun genders (der, die, das) through spaced-repetition flashcards using the FSRS algorithm, eight solo games, and real-time 1v1 duels. It covers vocabulary from telc levels A1.1 through B2 across ~3,000 words, supports custom vocabulary, and offers an interface in 17 languages.
Schadenfreude is the pleasure or satisfaction derived from others' misfortunes, troubles, or humiliation. The German loanword entered English texts in the 1852–1895 period and has equivalents across many languages. Research identifies three driving forces—aggression, rivalry, and justice—and shows that individuals with lower self-esteem experience schadenfreude more intensely.