Learn words the easy way.

Vocab Ninja is an iPhone app for learning foreign language words effectively.

Download Vocab Ninja on the App Store

Slide up, slide down

Slide up, or down

  • Remembered a card?
    Slide it up.

  • Don’t know it yet, or forgotten?
    Slide it down.

The app will keep track of your knowledge.

Study just enough

Study just enough

Already memorized cards are not shown, so you don’t lose time reviewing cards you already know.

But when you’re about to forget a word, Vocab Ninja will show it again. Just in time.

Learn more

Edit fast

Text-to-speech in 27 languages

The correct pronunciation of any word or phrase. Click to try: Arabic Chinese Czech Danish Dutch English Finnish French German Greek Hebrew Hindi Hungarian Indonesian Italian Japanese Korean Norwegian Polish Portuguese Romanian Russian Slovak Spanish Swedish Thai Turkish + 10 more voices


Slide up, slide down

Only the words you will use

Come across a word that you personally would hardly ever use, or want to save for later?

  • Slide it to the right.
    It will be moved to the archive.

Edit fast

Any language

We include a Made by Ninja stack with the 1000 most used Spanish words.

You can also download any of the millions of stacks on Quizlet.

Daily Spanish word

Edit fast

Add new words fast,
edit any time

Adding a word is fast and easy.

Cards can be edited at any time, also while studying.

Hold the phone in landscape to quickly make a picture card.


Please contact theNnullinja@vocabninja.com or find the ninja’s master on Twitter. There’s also more info on our blog.

Press Kit

The press kit includes a Reviewer’s Guide, app icon, screenshots & some graphics illustrating spaced repetition.

Download Press Kit

Follow Vocab Ninja on:


Mailing list

We will not give your address to anyone. Scout’s honor.

Daily Spanish word

Follow on: Tumblr, Twitter, Facebook or Instagram

These hints, mnemonics & mental nudges will be included in a future version of the app.

Vocab Ninja is developed in Buenos Aires, Antwerp, Saint Petersburg, Mexico DF & Kiev.
App icon designed in Beaverton, Oregon | App UI designed in Cracow, Poland & Indonesia

Apple, the Apple logo and iPhone are trademarks of Apple Inc., registered in the U.S. and other countries. App Store is a service mark of Apple Inc.