Quizlet has the largest flashcard library on earth, almost all of it user-generated. The signal-to-noise ratio is rough, especially after Quizlet started letting AI generate sets in bulk. Tomadora goes the opposite direction: fewer, curated courses with mixed question types and spaced repetition built in.
Quizlet works if you find the right deck. The problem is search — you spend 10 minutes finding "the one good Spanish A1 deck" and then realize it has 800 cards with no audio and questionable translations. Tomadora ships fewer courses but each one is hand-designed with audio, pronunciation, mixed question types, and SM-2 scheduling.
Tomadora is also free without ads. Quizlet's free tier shows full-screen ads between sets and reserves spaced repetition for the $35.99/year Plus tier.
If your professor or teacher posted a Quizlet set for your class, just use that — it matches your specific syllabus. Tomadora is for general microlearning, not classroom-specific decks.