Lexicon — AI Language Tutor
Speak English, Spanish & More
Only for iPhone
Free · In-App Purchases
iPhone
Stop studying languages. Start speaking them.
Forget about the language barrier and the fear of making mistakes. With Lexicon, you can practise English, Spanish, French, or German in live AI chats. It feels just like messaging a native-speaking friend, but without the anxiety, available anytime you want.
REAL CONVERSATIONS, NOT TEXTBOOKS
Chat with 30+ AI characters, each with their own unique personality and backstory. Discuss fashion with Sloane, debate tech with Dan, or gossip with Lola. Every conversation adapts to your level — no scripted dialogues or robotic replies.
CAN'T FIND A PARTNER? CREATE YOUR OWN
Build your ultimate conversational partner: set their personality, profession, and tone. Prepare for a job interview, practise ordering food abroad, or just chat about your hobbies in your target language.
EVERY MISTAKE IS A STEP TOWARDS FLUENCY
Lexicon checks your messages in real time and explains your mistakes in your native language. It doesn't just say 'wrong' — it shows you WHY it's incorrect and HOW to sound natural.
UNDERSTAND CONTEXT, NOT JUST WORDS
Tap any word in the chat to get more than just a translation. Get full definitions with examples and nuances. Different meanings are separated so you always grasp the exact sense in your specific context.
SAVE WORDS. LEARN THEM. REMEMBER FOREVER.
Add words and phrases to your custom decks. Revise them with smart flashcards based on spaced repetition — the scientifically proven method used by top polyglots worldwide.
EVERY RULE, ALWAYS AT HAND
Stuck? Open the built-in grammar library, structured by CEFR levels (A1–C2). Clear, bite-sized theory means the answer is always just one tap away.
BETTER VALUE THAN EXPENSIVE TUTORS
A whole month of active practice in Lexicon costs less than a single hour with a private tutor. Practise in a comfortable environment where it's safe to make mistakes.
YOUR PRIVACY MATTERS
Ad-free. No data selling. Your conversations are strictly private.
• Languages to learn: English, Spanish, French, German.
• Interface languages: Russian, English, Spanish, French, German, Arabic, Chinese, Hindi, Japanese, Portuguese.
Download Lexicon today and start speaking fluently!
Privacy Policy: https://dub.sh/lex/privacy
Terms of Use: https://dub.sh/lex/terms
Ratings & Reviews
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We’ve optimised performance, fixed bugs and improved stability. Thanks for sticking with us!
The developer, Aleksandr Kopachev, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Aleksandr Kopachev
- Size
- 56.2 MB
- Category
- Education
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later.
- iPhone
- Languages
English and 9 more
- English, Arabic, French, German, Hindi, Japanese, Portuguese, Russian, Simplified Chinese, Spanish
- Age Rating
9+
- 9+
- Infrequent
Profanity or Crude Humour
Mature or Suggestive Themes
- In-App Purchases
Yes
- Pro 1 Year (-50%) USD 69.99
- Pro 1 Year USD 149.99
- Pro 1 Month (-40%) USD 6.99
- Pro 1 Month USD 11.99
- Copyright
- © 2026 Aleksandr Kopachev