Comparison

Lexicon vs Learn Languages with Retriever

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lexicon

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Stop studying languages. Start speaking them. Forget about the language barrier and the fear of making mistakes. With Lexicon, you can practice English, Spanish, French, or German in live AI chats. It feels just like texting 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 ONE Build your ultimate conversational partner: set their personality, profession, and tone. Prep for a job interview, practice ordering food abroad, or just chat about your hobbies in your target language. EVERY MISTAKE IS A STEP TOWARD 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. Review them with smart flashcards based on spaced repetition — the scientifically proven method used by top polyglots worldwide. EVERY RULE, ALWAYS AT HAND Got 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. SMARTER THAN EXPENSIVE TUTORS A whole month of active practice in Lexicon costs less than one hour with a private tutor. Practice 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

About

Learn Languages with Retriever

Features
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Learn Languages with Retriever turns great lives into daily language lessons. Pick the people whose lives you admire and the app builds a course of your own. Each question is spoken by that person — listening, speaking, sentence building and real conversation, a little every day. ā–  Four languages English, Spanish, Chinese and Japanese. Choose the one you want and the course is assembled in it. ā–  A course built from the people you chose Historical figures and classic literature. The names you pick become the order of your level-by-level curriculum. ā–  Lessons in their own voice Every question comes from that person, and each correct answer is praised in your native language. ā–  Talk with them Speak and listen as if you were on a call. (The conversation is an AI re-creation, not a real statement by that person.) ā–  A little every day One more round today and a daily streak keep the habit small enough to keep. ā–  Plus subscription Learn as much as you want, with no heart limit. Everyone in the app is a public-domain historical figure or a character from classic literature. Admiration is the best teacher. Start today.

Screenshots

Lexicon4 screens
Learn Languages with Retriever4 screens

Verdict

The call

The clearest difference is in-app purchases: Learn Languages with Retriever at none against Lexicon's 4. Learn Languages with Retriever also leads on update cadence (every 3 days vs every 10 days) and device support (4 vs 1). On price, ads and iOS requirement there is nothing between them.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Lexicon sells 4 in-app purchases, starting at $5.99 per month. Learn Languages with Retriever asks for nothing beyond the download.

UpkeepUpdate frequency

Lexicon ships an update every 10 days, Learn Languages with Retriever every 3 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Lexicon versus Learn Languages with Retriever: the parameters behind the verdict, then further details
ParameterLexiconLearn Languages with Retriever
PriceFreeFree
Update frequencyEvery 10 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.015.1 — better
Further details — not scored
Size54 MB43 MB
Age rating9+4+
DeveloperAleksandr Kopachevapochopo Inc.

In-app purchases

4 purchases

Lexicon

Subscriptions4
  • Pro 1 Month (-40%)$5.991 Month
  • Pro 1 Month$9.991 Month
  • Pro 1 Year (-40%)$59.991 Year
Show 1 more
  • Pro 1 Year$119.991 Year
None

Learn Languages with Retriever

No in-app purchases

Questions

Is Lexicon free?
Lexicon is free to download, with in-app purchases available.
Is Learn Languages with Retriever free?
Learn Languages with Retriever is free to download, with no in-app purchases.
Do Lexicon or Learn Languages with Retriever have ads?
Neither Lexicon nor Learn Languages with Retriever shows ads.
Which is updated more often, Lexicon or Learn Languages with Retriever?
Lexicon ships an update every 10 days, and Learn Languages with Retriever every 3 days. Most recently, Lexicon was updated on November 5, 2026 and Learn Languages with Retriever on October 31, 2026.

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