Stop playing games. Start speaking.
Master Any Language
LinguaFlip combines flashcards with live conversation practice to build real speaking fluency — not just word recognition.
Most language apps train you to read.
LinguaFlip trains you to speak.
Tapping flashcards and matching words builds recognition — but not fluency. Real fluency lives in your muscles: forming words and speaking sentences without conscious effort.
LinguaFlip is built around one principle: say it out loud, every single time.
Muscle Memory
Speaking sentences aloud wires language into your motor cortex — the same way musicians learn scales.
Focus Word Method
Each card targets one key word or pattern. The sentence structure stays familiar while the focus changes.
Repeat & Master
Content is organized by CEFR level with three rounds and three spoken attempts per card.
The LinguaFlip Method
Three steps that turn passive knowledge into real speaking ability.
Read & Understand
A flashcard shows a sentence in your target language. The focus word is highlighted, and your native-language translation appears below.
Speak It — 3 Times
Tap the microphone and say the complete sentence aloud. Three successful attempts complete the card.
Progress Through Rounds
Each module moves from full visibility to blurred support and finally full recall mode.
Why 3×? Repeating a phrase three times in one session improves recall and pronunciation accuracy. Don’t just learn words — learn whole sentences.
The focus word stays.
Everything else becomes a test.
The key word stays visible, but you still have to say the whole sentence. The blurred parts force active recall and train you for real conversation.
Round 1 — Read & Speak
Round 3 — Recall & Speak
Why this works
It stops you from simply reading the answer off the screen.
It forces active recall of the surrounding words.
It trains you to say complete sentences, not isolated vocabulary.
With repetition, the full sentence starts to feel automatic.
When you’re ready, talk to the AI
After finishing a module’s flashcards, start a live conversation with the AI tutor. It acts like a patient, proactive language teacher.
Speaks your target language in real-time voice conversation
Focuses on what you have already learned
Introduces topics, asks questions, and keeps the conversation moving
Corrects gently with encouragement instead of criticism
Adapts from simple A1 greetings to advanced C2 discussions
Free — add your own free Gemini key and practice as much as you like; LinguaFlip charges nothing
Learn any of these 14 languages
Content is structured by CEFR level, from complete beginner to near-native mastery.
English
English
Español
Spanish
Français
French
Deutsch
German
Italiano
Italian
Português
Portuguese
Русский
Russian
中文
Chinese
日本語
Japanese
한국어
Korean
Türkçe
Turkish
हिन्दी
Hindi
فارسی
Persian
Čeština
Czech
Hundreds of exercises per language
Add your own phrases
Found a useful expression at work or on TV? Add it to your own flipbook and practise sentences that matter to you.
Open the Own section in the Learn tab.
Tap Create New Flipbook and name your collection.
Add cards with the sentence, translation, and focus word.
Practise them just like any other module, with speech recognition and rounds.
“Learning phrases from your own life is far more effective than memorising textbook sentences.”
Your API keys stay on your device
LinguaFlip uses cutting-edge AI services for speech recognition and conversation. Bring your own free API key from the provider and requests go straight from your device to the service — private, and free. Everything else in LinguaFlip — all 14 languages, A1–C2 lessons, exercises, progress tracking, your own flipbooks, standard voice recognition and system text-to-speech — works with no key at all.
Groq
Advanced speech recognition (Whisper)
Google Gemini
AI conversation partner
Unreal Speech
High-quality text-to-speech voices
Your API keys are stored only on your device. They are never uploaded, logged, shared, or stored in any database.
Everything you need to stay motivated
Daily Streaks
Track consecutive practice days to build a lasting habit.
Level Badges
Earn badges as you complete CEFR levels.
Progress Stats
See completed modules and practice history at a glance.
Study Reminders
Set custom reminder times to stay on schedule.
Offline Mode
Previously loaded content works without internet.
Android & iOS
Native mobile app available on both platforms.
Private
No ads, no tracking, no data mining — ever.
Pricing
LinguaFlip is free. There are no in-app purchases, no subscriptions, and no paid features. The app's AI features use an API key that you obtain free of charge directly from the provider (Groq, Google AI Studio, or Unreal Speech) and enter in the app's Settings — LinguaFlip never sells, resells, or profits from those keys, and never stores them: your key stays on your device and is never uploaded to our servers.
Become a tester!
Let me know if you'd like to test this language-learning Android app. The app is completely free. If you decide to give it a try, I'd really appreciate it if you could use it regularly and let me know what you think. 🙏