Learn Swedish on Rosetta Stone
Rosetta Stone is a language-learning app that started in the 90s for auditory learners.
Price: Free
Devices: Android, Apple Watch, iPad, iPhone, and Web
Swedish has so many unique concepts like Snedda (to move diagonally across something), White-pixelate ( to make the pixelated photo of a non-white criminal offender look white before publishing it in a newspaper, to avoid racist backlash), or Gubbsjuka (lit. old man sickness) (older men lusting over much younger women).
You can learn Swedish online on Mondly, Babbel, Memrise, Drops, Pimsleur, Rosetta Stone, Falou, Beelinguapp, Preply, or Cudoo.