"Finally no green owls, no streak pressure. My data stays on my phone, that was my main reason. And the AI decodes at my actual level, not in picture-book beginner mode."
Language learning app · Privacy-first · 20 languages
The language learning app that doesn't sell your data
On-device AI (Google Gemma), 20 languages, offline after the model download, music-based Natural Decoding Method no data collection. Built in Germany, free to use.
💬 "Wasted $250+ on language apps over 2 years. The DopaSpeak was the smartest investment I made."
Ron, Machine Setter from Arnsberg, Germany · DopaSpeak Beta Team · April 2026 (translated from German)
What makes us different
Why DopaSpeak is unlike Duolingo, Babbel, or Rosetta Stone
The category leaders all share three problems: cloud-only AI (your data leaves your phone), endless subscriptions (you pay forever), and gamified vocabulary that doesn't produce real listening confidence. DopaSpeak does the opposite on all three.
On-device AI
Google Gemma runs locally on your phone. No cloud calls, no listening history sent to servers. Your learning lives on your device.
No upsell pop-ups.
DopaSpeak is free to use. No upgrade nags, no premium paywalls, no locked features. Everything is available from day one.
Free to use
No subscription needed. Bring your own API key (e.g. Gemini with free quota) or download the on-device Gemma model (~3 GB). No payment to us, ever.
The Method
How DopaSpeak teaches a language
01
Pick songs you already love
From your Spotify, Apple Music, or YouTube Music library. The AI auto-detects the language and prepares decoding.
02
Word-by-word decoding
Below every foreign word: literal English, grammar role, pronunciation hint. The Natural Decoding Method made visible.
03
Active then passive listening
Active mode with the decoded text on screen. Then passive mode while commuting, working out, cooking. The melody locks vocabulary in.
20 languages
20 languages, offline after the model download, all on one license
European: English, Spanish, French, German, Italian, Portuguese, Russian, Polish, Dutch, Swedish, Greek. Asian: Chinese, Japanese, Korean, Vietnamese, Thai, Indonesian, Hindi. Middle Eastern: Turkish, Arabic. Most learners use 2–3 languages on one free download. Aljoscha runs Spanish, Japanese, French in parallel. Ron runs English, Korean, French. Vivian runs French and Korean.
Privacy
What "no data collection" actually means
Most language apps' privacy policies fit on 30 pages because there's a lot to disclose. Ours fits on two. The on-device AI (Google Gemma) processes your language learning entirely on your phone, what you decode, when you decode, which songs you import, never reaches our servers. We collect aggregate crash reports (anonymized) and that's it. No advertising IDs sold, no profiling, no behavioral data brokered. Private by default because we're a German-built app, but the privacy benefits apply everywhere, including to US users worried about CCPA, COPPA, or general data brokerage. If a free language app makes money, you're the product. DopaSpeak is free to use and does not sell your data. No middleman.
Language learning apps in the US: subscription fatigue meets data anxiety
Americans collectively spend over $4 billion annually on language learning. The market leaders, Duolingo, Babbel, Rosetta Stone, all run on cloud AI that processes your microphone, your typing, and your learning history on their servers. Combined with the post-2020 awareness of data brokerage and surveillance, US adult learners increasingly look for privacy-first alternatives. Subscription fatigue is the second axis: Babbel charges a subscription, Rosetta Stone charges $11.99/month or $299 for one language, Duolingo Plus is $13/month with ads on the free tier. DopaSpeak inverts this: free to use for all 20 languages, own API key or on-device model, no subscription. After that, it's free to use, including all future language additions and on-device AI updates. For the privacy axis, the on-device Google Gemma model means your microphone data, listening history, and decoded songs never leave your phone. Private by default (built in Germany), which translates into stronger user protections than CCPA requires. For US heritage learners (22M Hispanic, 5M Asian-American, 1M Korean-American), this combination of music-driven decoding plus on-device AI plus free model is uniquely positioned.
Pricing
Three plans. No hidden tiers.
With your own API key
Free app
You bring a key from Gemini, OpenAI, Anthropic, OpenRouter or Moonshot
- Gemini has a free tier, enough for daily learning
- You pay your AI provider directly, if at all
- Key is stored encrypted on your device (AES-256-GCM)
On-device
With the local model
Free
Google Gemma runs on your phone
- One-time download of about 3 GB, then no ongoing costs
- Runs on-device, no cloud, no account
- Pronunciation analysis always happens on-device
What never exists
✗
Our promise, in writing
- No subscription, no premium tier, no trial
- No account requirement
- No in-app purchases, no data selling
Free, no subscription, no account. Android 12 or newer.
DopaSpeak BETA team
What our BETA team says about learning with music
"I listen to music in the car and at the gym every day anyway. With DopaSpeak I finally understand what the songs are saying, and my English improves naturally without it ever feeling like studying."
"I learned more English in 4 weeks with DopaSpeak than in a whole year of evening classes. The word-by-word decoding finally makes clear how the language is actually built."
FAQ
Frequently Asked Questions About Learning Languages with Music
Can you really learn a language through music?
Yes, on one condition: you have to decode, not just listen. Listening on repeat trains your ear and nothing else. Decoding means reading the literal meaning under every single word before any polished translation, so the structure of the sentence becomes visible: word order, particles, verb endings. A song you already know by heart then works as a grammar lesson your brain accepts, because the melody already carries the rhythm. 15 to 30 minutes of active decoding a day plus passive listening is the pattern our beta team reported.
Which music can I use to learn a language with DopaSpeak?
Songs from your own library: pop, indie, hip-hop, reggaeton, Latin, K-pop, anime soundtracks, Bollywood. The AI decodes lyrics in all 20 supported languages word by word.
Do I need a Spotify subscription to learn languages with music?
No. DopaSpeak imports song lyrics independently of streaming services. You only need the lyrics, which you can import or paste directly in the app.
How does learning a language through music actually work?
The AI places a literal word-by-word translation under every line of your song, so you see how the language is really built. You study a song actively for 15 to 30 minutes, then keep listening passively while commuting, cooking or working out. Emotion plus repetition anchors vocabulary far deeper than flashcards.
How many songs should I study per day?
Active mode: 1 to 3 songs (15 to 30 minutes). Passive mode (listening without reading): unlimited, while commuting, at the gym or cooking.
Does DopaSpeak work offline?
Yes. With the local Google Gemma model (a one-time download of about 3 GB) the AI runs entirely on your phone. No cloud, no data leaving your device, no roaming costs.
What does DopaSpeak cost?
DopaSpeak is free. There is no subscription, no account and no in-app purchases. For the AI you either use your own API key (Gemini has a free tier) or the free local model on your phone.
Which languages can I learn with music on DopaSpeak?
20 languages, including Spanish, French, German, Italian, Portuguese, Japanese, Korean, Chinese, Arabic, Hindi, Turkish and Russian. You pick the song, the AI detects the language and decodes it.
Is learning with music scientifically proven?
Research on music and memory shows melody and rhythm act as powerful memory anchors, and Stephen Krashen's comprehensible input hypothesis explains why decoded songs at your level teach grammar and vocabulary naturally. DopaSpeak combines both: your favorite music becomes comprehensible input.
FAQ
Frequently asked questions
What languages does DopaSpeak support?
All 20 languages: English, Spanish, French, German, Italian, Portuguese, Russian, Polish, Turkish, Arabic, Hindi, Chinese, Japanese, Korean, Vietnamese, Thai, Indonesian, Dutch, Swedish, Greek. All available offline.
Does the app really work offline?
Yes. The on-device AI (Google Gemma) runs locally on your phone. No internet required after initial download. Perfect for flights, subways, and travel without roaming.
Does DopaSpeak collect my data?
No. The AI runs on your device, your listening history never leaves your phone, and we don't sell or share data with third parties. Built in Germany.
Are there ads?
DopaSpeak is free to use. No freemium tricks.
Do I need an account or sign-up?
No DopaSpeak account is required. Your progress lives on your phone.
How does the music method work?
You import or pick songs in your target language. The on-device AI decodes them word by word with literal English meanings, grammar notes, and pronunciation hints.
Is it better than Duolingo, Babbel, or Rosetta Stone?
Different. Duolingo gamifies vocabulary. Babbel teaches grammar. Rosetta Stone uses immersion. DopaSpeak uses your music as the curriculum, with on-device AI for decoding.
Why is DopaSpeak free when others charge monthly?
Because subscription fatigue is real. DopaSpeak is free to use.
Why we built this
From the founder
"It started with a Spanish song. I was in the car, hearing a track I didn't understand, but I wanted to. Not tomorrow, not after 200 days of Duolingo streak. Now. I tried to Google the lyrics, translate, learn. It didn't work. School English never worked for me, vocabulary apps even less. I just wanted to understand what that one artist was singing in his favorite song.
DopaSpeak is the app I would have needed back then. You pick the music you love, and the AI on your phone breaks it down for you, word by word. No cloud, no data leaks. Just you, your song, and your brain.
We're building DopaSpeak in Germany, because I want my daughter to one day learn languages with her favorite music, without her data being sold."
Start with the language learning app that respects your data: today
Free to use: own API key or on-device model. Built in Germany.