Vocabulary that actually sticks.
Our goal is simple: make language learning so natural and enjoyable that by the time you finish, you'll want to start another one.
Complete the sentence
I drink a cup of ______ every morning.
💡 Try typing "coffee"
Your memory has a rhythm. We follow it.
Spaced repetition is one of the most scientifically validated learning techniques. Kortle applies it word by word, adapted to your own performance - not the average.
- Correct answer → the word fades back, you'll see it again later
- Wrong answer → the word returns quickly, no penalty, no judgment
- Each session mixes reviews and new words to stay engaging
Your progress today
The moment you realize it's working.
This isn't a promise. It's what our users experience.
"The first time I understood an English joke without translating in my head, I knew something had changed."
"I tried three other apps. With Kortle I stuck with it. Now I want to learn Spanish."
Frequently asked questions
Ready?
Start today.
Feel the difference in one week.
Free to start. No credit card required. And if by the end you want to learn a second language - that means we did our job.
You've tried learning a language before. You stopped.
Apps that over-gamify. Courses that forget what matters: words. The frustration of understanding a song but not a conversation. Kortle takes a different path.
Words in their real context
No vocabulary lists. Every word appears in a natural sentence - the kind you'd hear on the street, in a movie, in a real conversation.
Reviewed just before you forget
Our system only shows you a word when your brain is about to forget it. You remember more, with less effort.
Visible progress every day
Ten minutes today. Ten minutes tomorrow. In a few weeks, you're reading, understanding, and realizing you want to go further.