Learn Languages Through Real Content

Transform YouTube videos, BBC podcasts, and any web content into your personal language classroom with AI-powered tools.

Multi-Platform Support

Learn English on YouTube, BBC, and CBC with our browser extension that transforms videos and podcasts into interactive lessons.

  • YouTube interactive subtitles
  • BBC & CBC podcast support
  • Chrome & Firefox extensions

Multiple Target Languages

Currently supporting English, Spanish, and French learning with more languages coming soon.

  • English learning content
  • Spanish learning content
  • French learning content

FlexiLingo Studio

An immersive interactive environment where you can work with every word and sentence in the content you're watching.

  • Click any word for instant translation
  • Full subtitle analysis & breakdown
  • Focus mode for distraction-free learning

Smart Subtitle Analysis

Visualize sentence difficulty, see word levels color-coded, and instantly identify phrases and collections in subtitles.

  • Sentence difficulty charts
  • CEFR level color coding (A1-C2)
  • Phrase & collection highlighting

Flexible Export Options

Export your vocabulary, phrases, and collections filtered by CEFR level. AI translates everything to your preferred language.

  • Export by CEFR level (A1-C2)
  • AI-powered translation to any language
  • Add directly to your decks

Unlimited Deck Creation

Create as many vocabulary decks as you need. Organize your learning by topic, difficulty, or any way you prefer.

  • Unlimited personal decks
  • Custom organization
  • Easy vocabulary management

Interactive Learning Tools

Click any word in subtitles to open a translation dialog with 3 free dictionaries, pronunciation, and AI-powered context analysis.

  • 3 free built-in dictionaries
  • Word pronunciation audio
  • AI context-based meaning & synonyms

Notes & Quizzes

Add personal notes to any sentence while learning. After watching videos or podcasts, test your knowledge with built-in quizzes.

  • Add notes to any sentence
  • Video & podcast quizzes
  • Track your comprehension

Any Website Text Analysis

Select any text on any website. Click the FlexiLingo icon to get full vocabulary analysis and save words to your decks.

  • Works on any website
  • One-click text analysis
  • Save words to decks instantly

XP & Gamification

Earn XP points for every learning activity. Track your progress, compete with friends, and stay motivated.

  • Earn XP for all activities
  • Activity tracking
  • Progress visualization

Leitner Box Review System

Our dashboard includes the proven Leitner spaced repetition system. Review your vocabulary at optimal intervals for maximum retention.

  • 5-box Leitner system
  • Smart review scheduling
  • Adapts to your pace

Social Learning

Add friends and share your review sessions with them. Learn together and stay motivated as a community.

  • Add friends to your network
  • Share reviews with friends
  • Collaborative learning

Public Decks & Reviews

Make your decks public for everyone. Create public review links that anyone can use without signing up.

  • Create public decks
  • Share review links (no signup needed)
  • Learn from community decks

Pro & Usage

Pro plans include generous monthly limits for translation, transcription, video analysis, and more. Pro users can request custom features and platform implementations.

  • Clear usage limits
  • Request custom features
  • Custom platform support

Community-Driven Development

We build what you need. Features are added based on user requests and community voting. Your voice shapes FlexiLingo.

  • Feature request system
  • Community voting
  • User-driven roadmap

Podcast Subtitle Generation

Many podcasts don't have subtitles. We generate subtitles for podcasts so you can learn from any audio content.

  • AI-generated subtitles
  • Learn from any podcast
  • Full subtitle analysis

Customizable Experience

Control how subtitles are displayed and how you interact with them. Customize the studio to match your learning style.

  • Subtitle display settings
  • Interaction preferences
  • Personalized learning

Request a Feature

Have a specific feature in mind? Let us know! If it's within our team's capacity, we'd be happy to build it.

  • Submit your ideas
  • Team reviews requests
  • Implemented if feasible
Browser Extension

Learn While Watching & Browsing

Our Chrome and Firefox extension turns YouTube, BBC, CBC, and any webpage into a learning opportunity. Click on words to translate, watch with interactive subtitles, and save vocabulary instantly.

  • Interactive subtitles on YouTube
  • BBC podcast learning support
  • CBC content support
  • Text analysis on any webpage
Install Extension
Serendipity
/ˌserənˈdɪpɪti/

The occurrence of events by chance in a happy way

C1noun
5
New
4
Learning
3
Review
2
Good
1
Mastered
Leitner System

Never Forget What You Learn

Our Leitner box system automatically schedules reviews at optimal intervals. Words you know well appear less often, while challenging ones get more practice.

Start Learning

Ready to Transform Your Language Learning?

Join thousands of learners using FlexiLingo to master English, Spanish, and French through real content.