Spaced repetition without the deck
Spaced repetition has the strongest evidence base of any study technique: review something right before you forget it, and each review pushes the next forgetting further away. Psychologists have measured this since the 1880s. It works.
And almost nobody sticks with it.
The problem was never the science — it’s the chore. Classic spaced-repetition tools make you build the deck, grade yourself honestly, and show up daily to a wall of due cards. Skip a week and you return to “412 cards due,” which is where most decks go to die.
The schedule without the chore
Polyingo keeps the schedule and deletes the deck.
Every word you practice — in any of the 27 games, from a dictation to a word hunt — is tracked. When its review is due, it doesn’t wait in a queue. It shows up as a card in your Discover feed, between a grammar card and a quick game, asking: still remember this one?
Get it right, and the interval stretches. Miss it, and it comes back sooner. That’s the whole ritual. No deck to build, no backlog to fear, no separate app to abandon.
Reminders that know your level
The same engine drives notifications. Ask for a few words a day and they arrive at your CEFR level — three B1 words, not a random sample of the dictionary. Saved a word that refuses to stick? Put a reminder on that one word and let it chase you.
The best spaced-repetition system is the one still running in month three. Ours runs inside a feed you were going to scroll anyway.