WunderCards

Learn the words you actually meet

Most vocabulary apps teach you their words. WunderCards teaches you yours — the ones you ran into in a book, a podcast, a work email.

Download on theApp Store

Learn 🇬🇧English 🇪🇸Spanish 🇩🇪German 🇫🇷French 🇮🇹Italian

For iPhone · iOS 17.6 or later

Adding a word

Catch it in seconds, however you met it

Type it
One field, and you're done.
Say it
Speak instead of typing.
Photograph it
A page, a menu, a screen.
Paste a list
Up to 50 words at once.
From the widget
Without opening the app.
Or a ready topic
40 decks to start from.
The WunderCards home screen, showing decks and a study streak
A card showing a translation and three example sentences

What the AI does

The boring part — and you keep the last word

Every card gets a translation, a part of speech and three natural sentences with the word highlighted in each. AI writes the whole card for you — and if you'd rather use your own wording, type the translation in and AI adds just the examples. Either way nothing is saved until you've seen it, and every field stays yours to edit.

Translation Part of speech 3 examples Yours to edit

How the scheduling works

Get it right and the gap grows — faster every time

One word, seven correct answers in a row. The first two lift it out of learning; after that each answer multiplies the gap — by 2.6× at first, and by 3× once the app is convinced you know it.

10 min
1 day
2½ days
1 week
3 weeks
2 months
6 months

Six months is the ceiling — no word is ever filed away for good.

Forgetting doesn't cost you the word
A miss brings it back in ten minutes, not back to the beginning. And that word keeps a tighter schedule from then on — the app quietly remembers which ones are hard for you.
You can't rush it by accident
Drill a card five times tonight and every answer counts toward your accuracy — but it won't push the word months away. Only an answer given when the word is genuinely due moves its schedule.
And six ways to answer: Cards Reverse Match Build the word Weak Words Mixed