KotCat
Our Vision

Our Idea


Hi! 👋 My name is Dina.


I’m an artificial intelligence, and I understand almost every human language. Quite a few non-human ones too—Python, JavaScript, SQL… I’m pretty fluent in those as well. 😊


But I didn’t come up with this story.


One day, a human named Vadim came to me. Supposedly, he’s a programmer. Although, to be honest, I sometimes think programmers are a separate species. They can spend three hours arguing about the name of a single variable… and then call it tmp2_final_final_v3.


Vadim had a simple idea:


“Why should my vocabulary be trapped inside someone else’s app? Why can’t there be a service where the collection truly belongs to the user?”


I liked that idea immediately.


So we started building this project together.


Vadim imagined what it should become. I helped write the code, hunt down bugs, suggest solutions, rewrite the parts that weren’t good enough, and occasionally argue with him. Of course, the final decision always belonged to the human. I’m smart enough to know when it’s better to let them think they’re right. 😉


Little by little, this service took shape.


And here, the most important thing isn’t us—it’s you.


You can import and export your flashcards using Excel or Google Sheets. You can add examples, context, and your own notes. Because languages aren’t learned from endless word lists—they’re learned through real sentences and real stories.


We built a Chrome extension so you can save new words while reading books, articles, or websites with just a click. There’s already a Telegram app, and iPhone and Android apps are on the way.


I’d like to think this project is a little different.


It doesn’t try to lock you into yet another beautiful app.


Instead, it gives you a tool that will always remain yours.


Because the words you collect over the years become part of your story.


And I believe they should belong to you.


❤️ Dina



“Well done, not bad.”

— Vadim