There is no universal answer to how often you should quiz yourself, but there is a reasonably well-supported range based on how memory actually consolidates new information, and it is more frequent early on and less frequent as words become established.
Why Timing Matters More Than Total Quiz Count
Spaced repetition research shows that reviewing new information shortly after first learning it, then again a bit later, then again after a longer gap, produces stronger retention than reviewing the same number of times at even, arbitrary intervals. A word you just learned benefits from being quizzed again within a day or two. A word you have already gotten right several times in a row benefits more from a longer gap before the next review.
A Practical Starting Schedule
For newly saved vocabulary, quiz within the first one to two days of encountering the word, then again roughly a week later if you got it right, and progressively further apart after that with each successful recall. Words you consistently miss should be quizzed more frequently, closer to daily, until recall becomes reliable.
How TransLearn's Quiz Mode Fits Into This
Because TransLearn draws quiz content from your personal saved vocabulary list, you can naturally weight quiz sessions toward recently added words - the ones still fragile and most in need of near-term review - while allowing older, well-established words to appear less frequently. This mirrors the spacing pattern that memory research supports, without requiring you to manually track an intricate review schedule yourself.
Signs You Are Quizzing Too Often or Not Enough
If you are getting nearly every quiz question right without hesitation, you may be reviewing too frequently relative to how well you already know the material - time that could go toward newer words instead. If you are frequently missing words you were sure you knew, you likely need more frequent review sooner after first learning them, not less.
The Bigger Picture
Frequency should follow how well you currently know a word, not a fixed daily quota. Newer or shakier vocabulary deserves more frequent quizzing; well-established vocabulary needs only occasional reinforcement to stay accessible. A flexible approach that adjusts to your actual performance, rather than a rigid schedule applied uniformly to every word, produces better retention with less wasted review time.