Experience the science of immersive language learning. Bennie uses AI to create natural conversations that force you to learn vocabulary on the fly—just like living in a foreign country. Based on comprehensible input theory, each email is 80-90% understandable with 10-20% new vocabulary, pushing you into the optimal challenge zone where real learning happens.
¡Hola! ¿Cómo estás? I hope you're having a wonderful day!
I wanted to ask you about your weekend plans. Are you planning to do anything special?
Experience language learning that feels natural, not forced
Get friendly emails that feel like chatting with a real pen pal. No boring grammar drills or vocabulary lists.
Bennie uses comprehensible input theory (i+1) to adapt difficulty in real-time. Each email includes 2-3 new vocabulary words at your optimal challenge level.
Every week, receive a comprehensive evaluation of your replies. See which vocabulary stuck, what grammar patterns you're mastering, and get personalized suggestions.
How AI makes immersive language learning possible—backed by proven research
Based on Krashen's research, Bennie uses the i+1 principle: content is 80-90% comprehensible with 10-20% new vocabulary. This optimal challenge zone—just slightly above your current level—is where real language acquisition happens. AI enables this precision at scale, adapting difficulty in real-time based on your performance.
In immersive settings, you're forced to learn vocabulary on the fly to communicate. Bennie recreates this by sending emails with new words in natural contexts. When you reply, you must actively use these words—no passive learning. This forced production accelerates vocabulary acquisition far beyond isolated word lists.
Research shows vocabulary learned in context is retained 3x better than isolated words. Every email tells a story, shares an experience, or asks a question—vocabulary appears naturally, not artificially. This mirrors how children learn languages: through meaningful communication, not flashcards.
Traditional immersion requires moving countries. AI makes it accessible: Bennie adapts every email to your exact level, interests, and learning pace. The system tracks your progress and automatically adjusts difficulty, ensuring you're always in the optimal challenge zone—something impossible with static textbooks or generic game-based learning apps.
Not too easy (boredom) or too hard (frustration)—just right for maximum learning
Replying requires active vocabulary use, not passive recognition
New words appear naturally across multiple conversations, reinforcing retention
AI adjusts difficulty based on your performance, keeping you challenged
Secure your spot as one of our first 10 beta users — completely free