StealthVoxDon't memorize sentences.
Learn from your own words.
StealthVox turns the conversations you actually have into your study material. Speak freely in your own language — the AI rewrites it as natural sentences in the language you're learning, then helps you say them out loud.
Get it on Google Play Android · 10-minute study room trial before sign-upSpeak it. Fix it. Say it again.
Talk naturally
With AI friends, in real-life scenarios, or on a call with a real friend. Your native language is fine.
Your words become the textbook
What you said becomes natural sentences, side by side with native expressions.
Make it stick
Build new sentences with the same grammar, then shadow them out loud.
Features
- Circle TalkChat with a group of AI friends about topics you love
- Scenario TalkRehearse real situations like airport check-in or ordering food
- Duo direct callCall a friend as usual; afterwards the conversation becomes study material
- Duo interpreted callTalk with a friend who speaks another language, each in your own, with AI interpretation
- Alternative expressionsCompare standard, American, British and native-speaker phrasing
- Instant tutoringSay a new sentence with the same grammar and get corrections with explanations
- ESSAYYour conversation rewritten as one polished, native-sounding text
- PRACTICESwap roles and replay the same conversation
- Shadowing · Snap EchoingHear your own story in a native voice and repeat after it
- KeepersLong-press any sentence you like to save it
Who it's for
- Learners who know words but can't speakStart from what you actually wanted to say.
- People with no one to practice withAI friends are ready any time.
- K-pop and K-drama fans learning KoreanCall a Korean friend with AI interpretation and learn from the conversation.
- Friends and families learning togetherOne Duo call becomes study material for both of you.
FAQ
What is StealthVox?
An AI speaking app that turns the conversations you actually have into language study material. You can speak in your own language; the AI rewrites what you said as natural sentences in the language you are learning, then you practice them with tutoring and shadowing.
Can I practice speaking Korean or English without a conversation partner?
Yes. In Circle Talk you chat with a group of AI friends about topics you like, and in Scenario Talk you rehearse real situations such as airport check-in or ordering at a restaurant.
Can I learn a language by calling a friend?
Yes. Invite a friend with Duo and call. Even if you chat in your native language, what you both said becomes study material in the language you are learning. With a friend who speaks a different language, use the AI-interpreted call so each of you speaks your own language.
How is it different from other AI conversation apps?
Instead of a fixed curriculum, it starts from what you actually said. And not only AI chats — real calls with friends become study material too.
Which languages are supported?
12 languages: Korean, English, Japanese, Chinese, Spanish, French, German, Hindi, Russian, Portuguese, Italian and Dutch.
Where can I download it?
StealthVox is available for Android on Google Play.