Review less, remember more, with science-backed scheduling on Lokia.
Spaced repetition is a learning technique where you review information at increasing intervals, just before you are about to forget it. Instead of re-reading the same words many times in one day (cramming), you spread reviews over days and weeks.
Research shows that this matches how memory works: each successful recall strengthens the trace, and the next review can happen later. The result is durable long-term retention with less total study time.
If you review too early, you waste time. If you review too late, you have forgotten and must relearn from scratch. Spaced repetition aims at the sweet spot: review when retrieval is still possible but effortful; that is when learning is most efficient.
On Lokia, every word you save becomes a flashcard. The app schedules each card’s next appearance based on how well you remembered it, not on a fixed calendar.
Without review, we forget most new information quickly (Ebbinghaus, 1885, still the reference model). Each successful recall at the right moment “flattens” the curve for that item. Spaced repetition is the practical way to fight forgetting at scale.
Lokia uses FSRS (Free Spaced Repetition Scheduler), a modern scheduler used in apps like Anki. FSRS models memory with two main ideas: stability (how long knowledge tends to last) and difficulty (how hard the item is for you).
After each review, you tap a grade: Again, Hard, Good, or Easy. The algorithm updates stability and difficulty and picks the next interval, from minutes (during learning) to months (for well-known words).
Short learning steps (e.g. a few minutes apart) help new words stick; longer intervals spread reviews so your deck stays manageable as vocabulary grows.
Flashcards in Lokia are tied to your vocabulary: words from videos, “My words”, or your wordlists all follow the same FSRS scheduling. You get new cards up to your daily limit; reviews are mixed with learning and relearning cards so nothing slips through the cracks.
You can adjust daily new cards and review limits in your settings. The goal is sustainable progress: a few minutes every day beats long cramming sessions before a test.
You see the word (or the prompt), think of the answer, reveal it, then choose how well you knew it.
Save words from YouTube or build lists, then review with FSRS flashcards, free on the starter plan.