The next-generation AI language ecosystem supporting 133+ languages with real-time pronunciation feedback, AI-powered chat, and personalized learning paths. Practice speaking with native-level accuracy and transform language learning globally.
A deep dive into LSpeak's core modules — from AI-powered conversation to gamified retention
Practice free conversation with an AI that corrects grammar and pronunciation in real-time, just like a native speaker
Speak naturally — STT converts your voice to text before sending to the AI
AI detects and highlights grammar errors during conversation with clear explanations
AI responses are read aloud with native-quality text-to-speech
Each session is scored on fluency, vocabulary, and grammar accuracy
Review past conversations to track progress and revisit mistakes
Switch languages or conversation topics mid-session without losing context
Structured training with 25 topics, 111+ exercises, CEFR levels, and spaced repetition
Multiple choice, fill in blank, error correction, translate, and reorder words
Topics tagged A1–C2; unlock higher levels as your grammar improves
Spaced repetition schedules reviews using interval = base × 1.5^mastery
Earn +5 (basic), +10 (first attempt), or +15 (perfect) XP per exercise
Progress from Beginner → Novice → Intermediate → Advanced for each topic
Comprehensive library covering tenses, conditionals, passive voice, and more
Phoneme-level accuracy scoring on par with ELSA Speak — know exactly what to fix
Analyze every individual sound, not just words — precision pronunciation feedback
Three distinct scores show different dimensions of your pronunciation quality
Consonants, vowels, diphthongs, stress, intonation, and connected speech
Distinguish tricky sound pairs like /p/ vs /b/ and /θ/ vs /ð/
Word, sentence, minimal pair, and free speech practice modes
See IPA transcription for every word to understand correct pronunciation
Keep learners coming back every day with pets, leaderboards, referrals, and rewards
Choose Dog, Cat, Bee, or Tree — feed with coins to keep them happy and growing
Weekly, monthly, and yearly rankings motivate healthy competition among learners
Share your code — both you and your friend receive bonus rewards on sign-up
Invite a friend each day to earn coins — up to 50 invites per day accepted
Maintain daily streaks and manage your energy for AI speaking practice sessions
Free users can watch ads to earn extra energy and coins instead of paying
Practice free conversations with AI that understands context and corrects grammar/pronunciation in real-time, just like talking to a native speaker.
Analyze pronunciation at the phoneme level (smallest sound unit), matching technology used by ELSA Speak. Detailed feedback on:
Practice all 4 language skills in 133+ languages on one platform:
Keep users engaged with innovative features:
AI Speaking Practice
6 Energy / session
Coins
Energy
Banner ads at the top of screens and interstitial ads when viewing results for free-tier users.
Based on investment of 2.5 - 3 Billion VND (~$100,000 - $120,000)
2%
Buy Monthly Subscription $3.99
93%
Free users (AdMob revenue)
| Revenue Source | 10,000 users | 50,000 users |
|---|---|---|
| IAP Revenue | ~$500 | ~$2,500 |
| Subscription Revenue | ~$800 | ~$4,000 |
| AdMob Revenue | ~$600 | ~$3,000 |
| Total / month | ~$1,900 (~48M VND) | ~$9,500 (~240M VND) |
Login Screen
Home Screen
Learning Mode
Speaking Practice
Pronunciation Scoring
Ranking & Achievements
| Feature | LSpeak | Duolingo | ELSA Speak | Cake |
|---|---|---|---|---|
| Languages Supported | 133+ | ~40 | 1 | 1 |
| AI Chat with Grammar Correction | ✅ | ❌ | ❌ | ❌ |
| Phoneme-Level Pronunciation | ✅ | ⚠️ Limited | ✅ | ❌ |
| SRS Algorithm | ✅ | ✅ | ❌ | ❌ |
| Mascot Pet & Social Features | ✅ | ✅ | ❌ | ✅ |
Stop switching between multiple apps. Practice English, Japanese, Chinese, Korean, and 129 more languages all on one platform.
Get detailed phoneme-level analysis that rivals professional pronunciation apps. Know exactly what to improve.
Practice free conversation without fear of judgment. AI corrects your grammar and pronunciation in real-time.
Nurture your mascot, compete with friends, maintain streaks, and unlock achievements. Learning never felt this fun.
