1. Install the dual subtitles extension
To translate words and phrases in subtitles on streaming and course sites, install the browser extension. It is available for Chrome, Edge and Firefox and also works in Arc and Brave. A Safari version, including mobile, is on the way.
2. Apps to study your words
Your Wordbook is a vocabulary builder that fills itself while you watch. To learn new words from it, pick the app that suits you: our Telegram bot, Anki or one of our partner apps. More are in the pipeline.

Our Telegram bot
Our Telegram bot helps you learn new words from your Wordbook. It breaks each word down: translation, usage, examples in context. You write your own example sentences, and an AI language tutor reviews them and answers any language question. Then the word moves to spaced repetition. You can answer by voice.
The bot is free. Importing your InterSub dictionary: 5 words on the free plan, unlimited on any paid plan. You can also add your own words (file or list) or pick topic lists, English only for now.
Languages: English, German, Spanish, French, Japanese, Chinese, Russian, Korean, Czech, Polish.
How to connect: in the bot's onboarding, pick InterSub as the word source, take a photo of the QR code in your InterSub profile and send it to the bot as a picture.
Open the bot in Telegram ➞
More about the bot ➞
The bot is free. Importing your InterSub dictionary: 5 words on the free plan, unlimited on any paid plan. You can also add your own words (file or list) or pick topic lists, English only for now.
Languages: English, German, Spanish, French, Japanese, Chinese, Russian, Korean, Czech, Polish.
How to connect: in the bot's onboarding, pick InterSub as the word source, take a photo of the QR code in your InterSub profile and send it to the bot as a picture.
Open the bot in Telegram ➞
More about the bot ➞
Anki
The powerhouse flashcard apps, both mobile and desktop, trusted by learners worldwide.
How to connect:- Open Anki and Go to Preferences. Сlick Tools → Preferences and switch to the Syncing tab.
- Set Up Self-Hosted Sync Server: Enter the URL for your InterSub account: https://app.intersub.cc in the “Self-hosted sync server” field. Click "Close" to save the settings.
- Log In to Your InterSub Account: click the "Sync" button in Anki (top-right corner). When prompted by the "Account Required" dialog, enter your InterSub email and password.
- If you encounter a "Conflict between decks on this device and AnkiWeb" message: select "Download from AnkiWeb".
MyWords
Learn new words in different ways:- Cards - visual memorization with the ability to listen to a word;
- Dictation - checking spelling;
- Speaking - practicing, checking, and improving pronunciation;
- Player - passive listening to the added words;
- Test - controlling the results of learning.
- Spanish - English;
- German - English;
- English - Russian.
- Go to the app Settings, click on "Sign in InterSub";
- Scan a QR code in your InterSub profile;
- That's it. Find your saved words in InterSub category.
SmartRepetition
Interval repetition cards. Allows you to retain all knowledge in long-term memory by repeating the information at certain increasing intervals.
Supported language pairs: any.
How to download words from InterSub:- Go to the app's Menu, select Loading collections, then - Loading from InterSub;
- Scan a QR code in your InterSub profile;
- Done! Find your saved words in InterSub category.
Download in App Store ➞
Download in Google Play ➞InMindBot
Telegram bot for memorizing words with an interesting training algorithm and humor - you won't be bored :)
Supported language pairs: any.
How to link with InterSub:- In the bot menu, select "Connect InterSub.cc";
- Scan the QR code in your InterSub profile;
- Wait for the words to be imported;
- Done! Your saved words from Personal account, marked with a star, will now be in the "Words from InterSub" category. And will be updated automatically.
Install bot in Telegram ➞
If you already have your favorite word training app - contact us, we'll try to arrange with its publisher to integrate with InterSub too.


