LexUp

All begins with a letter word phrase level dream
Master Advanced Vocabulary

Play fast-paced word rounds, swipe through smart flashcards, discover your CEFR level, and compete on global leaderboards.

B2
Resilient
/rɪˈzɪl.i.ənt/
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B2
Definition
Able to recover quickly from difficult conditions; tough and adaptable.
"She is a resilient person who never gives up."
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15000+
Teacher Approved
6
CEFR Levels
Word Rounds
100%
Free to Use
Google Play / App Store

What Our Learners Say

Real Reviews from students and language learners worldwide on the Google Play Store.

★★★★★

"A very fun word app. Especially they found a fun way to test your vocabulary. It uses different activities to learn words. The interface is also very user-friendly."

TR • berke_dev Google Play Review
★★★★★

"Was looking for a fun way of extending my vocabulary and found more than what I was looking for! The game is addictive and rush rounds are so much fun to play."

TR • ege_s Google Play Review
★★★★★

"It's a great app. A wonderful way to learn and test vocabulary. It has a wide database including words used by native speakers. Highly recommend."

TR • hande_px Google Play Review
★★★★★

"I was looking for a way to improve my English more easily and dude this app is insane, I still cannot believe how good it is. Thanks for making it free btw 🥰🥰🥰"

TR • fog_walker Google Play Review
★★★★★

"Hello, the app is really awesome! I like that there are two different modes for learning new words."

EN • dreamcatcher Google Play Review
★★★★★

"Flashcards are so good... thank you for making this free."

TR • rüzgar98 Google Play Review
★★★★★

"Normally I don't rate applications, but this is the best app for testing your vocabulary and learning new words. I like this ❤️"

AZ • elvin_pa Google Play Review
★★★★★

"Excellent / very excellent. I advise everyone to download the program. One of the most beautiful apps to learn words."

AR • tariq_s Google Play Review
★★★★★

"I give this 5 star because I'm first rating this app. I'm still new to the app but I'm already improving my English vocabulary!"

EN • alex_omega Google Play Review
★★★★★

"I recommend this app for those who want to learn English vocabulary or improve their list of vocabulary. Take your time to improve this app! I will be looking forward to it."

EN • novafrost Google Play Review
★★★★★

"I think you guys should add a 'closest meaning' option. This app is so useful and convenient to me. Thank you very much."

VI • linh_garnet Google Play Review
★★★★★

"I find learning quite fun, it's very helpful for practicing vocabulary every day!"

VI • vyvy Google Play Review
★★★★★

"Nice, now I can learn more English words easily. The design of the game is so clean and addictive!"

EN • rothko_art Google Play Review
★★★★★

"In my opinion, this app is one of the best apps to learn more vocabulary. The games are simple yet useful, giving this a 5-star rating! Highly recommended! <3"

ID • kadek_w Google Play Review
★★★★★

"It was quite fun, so addictive I played for hours straight. Overall, it's pretty good for challenging the brain and learning."

US • sam_gold Google Play Review
★★★★★

"The best vocabulary building app"

GB • charlotte_h Google Play Review
★★★★★

"Such a great app. Good for exploring new vocabulary! It has a flashcard method that makes vocabulary easier to remember and review."

ID • rey_alpha Google Play Review
★★★★★

"Clean and easy to use. I like that it doesn’t feel crowded."

TR • can_yilmaz Google Play Review
★★★★★

"Nice app for quick vocabulary practice. The design is simple and smooth."

VN • minh_khue Google Play Review
★★★★★

"Works well so far. The word challenges are actually fun."

KR • minji_seo Google Play Review
★★★★★

"Good for learning new words without feeling too serious or boring."

TR • elif_kaya94 Google Play Review
★★★★★

"Simple, fast, and useful. I’ll keep using it for a while."

DE • lukas_m Google Play Review
★★★★★

"Really like the clean look. No unnecessary stuff, just practice."

VN • phuong_thao Google Play Review
★★★★★

"Pretty good vocabulary app. The game mode makes it more engaging."

TR • mert_oz Google Play Review
★★★★★

"Smooth experience overall. Would be nice to see more word packs later."

KR • sujin_park Google Play Review
★★★★★

"Easy to open during breaks and learn a few words. That’s what I needed."

BR • thiago_silva Google Play Review
★★★★★

"Not overcomplicated, which I like. The app feels fresh."

ID • fajar_r Google Play Review
★★★★★

"Good app. Some words are challenging, but that’s the point."

TR • asli_karaca Google Play Review
★★★★★

"Clean UI and quick practice sessions. Solid so far."

VN • linh_garnet Google Play Review
★★★★★

"What a wonderful app. It's a good option to remember words that we already learned."

ES • carlos_sanz Google Play Review
★★★★★

"Out of all the apps I've tried for learning languages, LexUp is the best app to learn English. LexUp is so amazing!! 😻😻"

TR • melis_a Google Play Review
★★★★★

"It's good in my opinion, you can study pretty much in it"

RU • dmitry_k Google Play Review
Star icon Why LexUp?

Everything You Need to
Master English Vocabulary

Designed by language learners, for language learners. Every feature is crafted to make vocabulary building addictive and effective.

Smart Flashcards

Swipe right if you know it, left to learn it. Each card shows definitions, examples, Turkish translations, and CEFR levels. Auto-read pronunciation included.

Word Rounds Game

Race against the clock to type as many words as you can. Earn points, unlock letter combos, and watch your score skyrocket with consecutive C-level words.

CEFR Level Tracking

AI-powered analysis discovers your real English level from A1 to C2. Track your learning level as you grow your vocabulary with precision.

Global Rankings Trophy icon

Global Rankings

Compete with players worldwide. Climb the leaderboard with your Elo-based game score and see where you stand among the best.

AI Vocabulary Estimate Brain icon

AI Vocabulary Estimate

Our AI estimates your total vocabulary size based on the words you know. Watch your brain power grow with every session.

Cloud Sync

Sign in with Google or Facebook. Your progress, scores, and word lists are safely synced across devices through Firebase cloud.

Quick Start

Up and Running in Minutes

No complicated setup, no paid plans. Just download, sign in, and start learning.

1

Download & Sign In

Get LexUp from the App Store or Google Play. Sign in with your Google, Facebook, or email account in seconds.

2

Play & Learn

Jump into word rounds or swipe flashcards. Every word you encounter builds your personal vocabulary profile.

3

Track & Compete

Watch your CEFR level rise, review daily flashcard packs, and climb the global rankings against real players.

Ready to Level Up Your English?

Join thousands of learners building their vocabulary the fun way. Get started today.

Got Questions?

Frequently Asked Questions

Everything you need to know about LexUp vocabulary app.

LexUp is a premium, free English vocabulary building application designed to help language learners expand their vocabulary bank without feeling bored. The app integrates smart spaced-repetition (SRS) flashcards, gamified vocabulary tests, real-time CEFR level estimation (A1 to C2), and global Elo-based leaderboards. By combining cognitive science with interactive gaming, LexUp turns language acquisition into a fun, addictive daily habit.
LexUp features a dynamic, AI-powered vocabulary estimation model (currently version 11) that calculates your active vocabulary size based on the Common European Framework of Reference for Languages (CEFR). As you play, study cards, and answer fill-in-the-blank questions, the algorithm measures your recall accuracy across vocabulary tiers: A1 (500–1400 words), A2 (1400–3200 words), B1 (3200–6000 words), B2 (6000–9800 words), C1 (9800–15500 words), and C2 (15500–20000+ words). Your progress updates in real-time, providing an accurate representation of your actual English knowledge.
LexUp’s smart flashcard decks utilize intuitive swipe gestures for frictionless learning:
  • Swipe Left (LEARN): Marks a word to be studied, scheduling it for review in upcoming study sessions.
  • Swipe Up (SKIP): Temporarily bypasses the card without marking it as known or unknown.
  • Swipe Right (KNOW): Marks the word as fully known, archiving it from your active learning deck.
For words in your active daily review queue, swipes change dynamically to Spaced Repetition (SRS) intervals, allowing you to choose "Review tomorrow" (Left), "Review in 3 days" (Up), or "Will Never Forget" (Right) to optimize memory retention.
Word Rounds is a fast-paced vocabulary game where you have a 35-second timer to type as many English words matching the given criteria as possible. The game features an advanced combo and scoring multiplier system: submitting consecutive high-level (B2, C1, C2) words triggers score multipliers and visually stunning letter combo effects. Be careful: you start with 3 lives. Correct submissions keep you in the game, but typos or failed inputs penalize your lives and break your active multiplier combo.
Yes! LexUp includes built-in audio pronunciation utilizing your device's native Text-to-Speech (TTS) engine (powered by Capacitor for mobile and native SpeechSynthesis API for browsers). When studying flashcards, the app automatically reads the word aloud when the card is revealed, and reads the English definitions and example sentences when the card is flipped. This multi-sensory approach ensures that you master both the spelling and correct pronunciation of every new word.
Yes, LexUp is built to support offline studying. Core gameplay datasets, basic definitions, and CEFR level tracking scripts are packaged locally inside the application. While certain advanced AI features (like generating fresh dictionary definitions, retrieving translations, or syncing leaderboards) require an active connection, you can swipe flashcards and play offline rounds seamlessly anywhere.
LexUp implements a global, competitive leaderboard powered by Firebase Firestore. Your rank is calculated using an Elo-based ranking system, similar to competitive chess or online gaming. Winning rounds and answering difficult quizzes increases your Elo rating, allowing you to climb the global leaderboard. The public leaderboard displays a live snapshot of the top 300 players worldwide, driving engagement through friendly competition.
Get In Touch

Contact Support

Have any questions, feedback, or need help with LexUp? We're always here for you. Drop us a message anytime!

aldemir@lexupapp.com