AI platform for non-beginners

Unlock advanced English through your content

Make your own learning space with  movies,  games,  YouTube videos,  books,  articles or any content from your real life

You know better what you need

Learn English you definitely need in real life while other apps give the same content to their users
Make your own courses for your learning needs
Just give content to Subtlex and let AI do the rest

Truly personalized content, because it’s yours

Learn English through content you already love
Movies/TV Series
Upload subtitles for your favorite movie or TV series, learn 70-80% of the most common words that Subtlex gives you, and start watching them in English
Games
Upload a gameplay video or a guide from any website for your favorite game, learn words by chapters of the game and start playing in English
Books
Upload an English book and read it using the AI-powered reader on Subtlex

How Subtlex teaches you English effectively

Learn English with AI powered approach and features
Move faster by learning the most common words of your content
Improve your vocabulary with a simple idea – the more popular words you know, the better you understand the entire text of your content

AI chooses words to study by using your current vocabulary level
Read any content as a book
Practice reading and tap on any word to find out its basic form, part of speech, definitions, translations and more

AI highlights unknown and studied words in your content
Do exercises to memorize words with Spaced Repetition
When you meet new words on Subtlex – add them to your own dictionary and memorize through spaced repetition

Subtlex notifies you when it's time to study words

Who am I

I'm Leven, a former corporate full-stack engineer, team lead and now a solo developer of Subtlex

I love learning languages and I was frustrated with all the language apps aimed mostly at beginners, where it's very hard to reach any level above B1

They never let you explore vocabulary from a newly released movie like "Oppenheimer" (where you understood only about 10% but want to improve it)
They don't let you read your newly bought book in its original language and limit you to a restricted, copyright-bound catalog
They don't allow you to learn vocabulary from your favorite game, but I wanted to learn it and then practice listening skills while playing "The Last of Us"

These frustrations led me to create Subtlex :)

I hope you'll enjoy my app and I'd be happy to get any feedback, suggestions, or questions you might have