AIecholang

echolang is a private voice translator that runs entirely on your iPhone. Speak naturally — the app transcribes your speech, translates it and speaks the result aloud. No cloud, no accounts, no tracking: your conversations never leave the device. HOW IT WORKS • Tap and hold the microphone, speak, release • Your speech is recognized on-device with Whisper model • A 4B-parameter translation LLM (TranslateGemma, running on Apple's MLX framework) translates the phrase • The translation is spoken aloud with natural system voices • Perfect for two-way conversations: each speaker taps their side, languages swap in one tap FEATURES • 33 languages: English, Spanish, French, German, Italian, Portuguese, Russian, Ukrainian, Polish, Czech, Dutch, Swedish, Norwegian, Danish, Finnish, Greek, Romanian, Hungarian, Turkish, Arabic, Hebrew, Hindi, Bengali, Tamil, Telugu, Marathi, Urdu, Chinese, Japanese, Korean, Vietnamese, Thai, Indonesian • Adjustable translation style: neutral, formal, informal, polite, colloquial or concise • Conversation history with playback of any phrase • Works fully offline after a one-time model download — ideal for travel, roaming and flights • 100% on-device AI: no servers, no sign-up, no data collection • Free forever: no ads, no subscriptions, no in-app purchases PRIVACY All speech recognition and translation happens locally using on-device neural networks. The microphone is used only while you hold the record button. Nothing is uploaded, stored remotely or shared with anyone. REQUIREMENTS • iOS 18 or later • iPhone with 6 GB RAM or more (iPhone 12 Pro and later Pro models, iPhone 14 and later) • ~3 GB of free storage • On first launch the app downloads its on-device AI models (~2.8 GB). Please use Wi-Fi and allow a few minutes — this is a one-time setup.