
Spaced Repetition Explained for Complete Beginners
The one study idea that quietly powers every serious vocabulary app.
Reviewing a word right before you'd forget it is the closest thing language learning has to a cheat code. This is the science of timing your reviews — what spaced repetition is, the intervals that work best, how to run a schedule with nothing but paper, and which free apps do the timing for you. Start with the beginner explainer, then pick an app or build your own box.

The one study idea that quietly powers every serious vocabulary app.

No app, no subscription — just a shoebox, some cards, and a system.

How long to wait between reviews — and why the gaps should grow.

Software smarts or a hands-on shoebox? An honest side-by-side.

The habits that turn a five-minute review into an hour of busywork.

More isn't better. Find the daily number your memory can actually keep.

The same timing trick works for verb endings and sentence patterns.

Anki, Memrise, and more — what each does well, and who they suit.
Read the beginner explainer first so the idea clicks, then either grab an app from the apps comparison or build a paper Leitner box. Pair it with strong memory methods and you'll rarely lose a word again.
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