Lexicon vs LingoDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
LingoDiary
This app helps you learn languages by journaling about your real life. It provides AI-powered corrections, grammar explanations, and helps you build vocabulary from your own words. Practice pronunciation and speaking with audio recording and track your progress.
- AI journal coach with corrections
- Two-way journaling
- Personalized Vocabulary Vault
- Flashcard and quiz modes
- Pronunciation practice with audio recording
- Progress tracking and streaks
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Language learning that actually sticks — because it is about your life, not textbook exercises. Write, get corrections, and build vocabulary from your own words. THE PROBLEM WITH MOST LANGUAGE APPS Most language apps teach generic phrases. But you want to talk about your day, your trip, your job, your dreams, and the things you actually care about. LingoDiary helps you learn through real writing, real speaking, and real emotion. WHAT LINGODIARY DOES Write a journal entry in your native language and get a natural translation with grammar notes, so you can see how to express your real thoughts in the language you are learning. Write in your target language and get AI-powered corrections that do more than fix mistakes. LingoDiary explains why, gives grammar notes, and suggests natural alternatives a native speaker might use. Every word you discover becomes part of your personal Vocabulary Vault. Study with flashcards built from your own entries. Record yourself reading your entries aloud to practice pronunciation and speaking. Then test yourself with mastery quizzes until it sticks. This is language learning anchored to your real life — one of the best ways to build lasting fluency. FEATURES AI journal coach with corrections, grammar explanations, and natural alternatives Two-way journaling: write in your native language or your target language Vocabulary Vault to save words directly from your entries Flashcard mode for studying your own vocabulary Mastery quizzes and tests to check words you have actually used Daily Dose for quick daily vocabulary practice Text-to-speech playback for listening practice Audio recording for speaking and pronunciation practice Streaks and progress tracking Themes to customize your journaling space Privacy-focused account tools, including support, privacy policy access, and account deletion SUPPORTED LANGUAGES English, Spanish, German, French, Italian, Portuguese, Chinese, Japanese, Korean, Russian, Indonesian, Hindi, Vietnamese, Arabic, and Turkish. All levels welcome — from A1 beginner to C2 advanced. MEET MANGO LingoDiary's mascot is Mango the Sun Conure — because the best language learning companion is one who never judges your grammar and always celebrates your progress. Do not just study a language. Live it. Write your first entry today Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lingodiary.pro/privacy
Screenshots
Verdict
The clearest difference is device support: LingoDiary at 3 against Lexicon's 1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Lexicon sells 4 in-app purchases, starting at $5.99 per month and LingoDiary sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.
| Parameter | Lexicon | LingoDiary |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 54 MB | 18 MB |
| Age rating | 9+ | 4+ |
| Developer | Aleksandr Kopachev | BENJAMIN LUKE GEORGE |
In-app purchases
Lexicon
- Pro 1 Month (-40%)$5.991 Month
- Pro 1 Month$9.991 Month
- Pro 1 Year (-40%)$59.991 Year
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- Pro 1 Year$119.991 Year
LingoDiary
- LingoDiary Pro Monthly$4.991 Month
- LingoDiary Pro Annual$39.991 Year









