Frequently Asked Questions
Is TheLernen really free?
Yes! Our core 1000-word vocabulary courses across all languages are completely free. We may offer premium features later, but the essentials will always be free.
Why only 1000 words?
According to Zipf's law, the 1000 most frequent words in a language make up about 85% of all daily speech. By mastering them first, you get the highest return on investment for your time.
How does Spaced Repetition work?
Our algorithm (based on SM-2) calculates the optimal time to show you a word right before you forget it. This moves vocabulary into your long-term memory efficiently.
Do I need an account to study?
You can try the app without an account as a "Guest", but your progress will only be saved in your current browser. To sync across devices, you must create an account.
Have more questions? Start learning to find out!
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