tahutu/assistant

iOS app · On-Device Voice · English Tutor

Your Private AI Voice Assistant

Talk naturally. Practice English. Keep your voice on your phone.

Talk naturally and get intelligent responses. Practice conversations with AI scenarios, build vocabulary with spaced repetition, and switch effortlessly between Claude, Gemini, GPT-4o, and DeepSeek. On-device speech recognition keeps your audio strictly private.

Scan to download Tahutu Assistant on the App Store Scan to install

Available on iOS

Download directly from the App Store for iPhone & iPad.

Download on App Store

Core capabilities

Engineered for low latency, privacy, and natural language fluency.

  • Privacy

    On-Device Voice Processing

    Speech recognition and text-to-speech run locally on your device via Sherpa-ONNX. Your voice audio never leaves your phone.

  • Intelligence

    Multiple AI Models

    Choose from Claude, Gemini, GPT-4o, or DeepSeek. Switch models instantly to find the best balance of speed, depth, and personality.

  • Learning

    English Practice Scenarios

    Practice everyday conversations, interviews, and business scenarios with adaptive AI roleplay. Build confidence in speaking.

  • Bilingual

    Vietnamese & English

    Native mixed Vietnamese + English text-to-speech with seamless code-switching support tailored for bilingual learners.

  • Modes

    Push-to-Talk & Hands-Free

    Precise push-to-talk control for noisy environments or hands-free voice activity detection (VAD) for natural conversation flow.

  • Organization

    Smart Notes & Vocabulary

    Capture vocabulary, phrases, grammar tips, and cultural insights during conversations. Review with spaced repetition.

  • Zero Cloud Voice

    Strict Privacy by Default

    No tracking, no analytics, no advertisements. Voice audio is processed locally. Only text queries reach AI providers.

  • Open Source

    Transparent Architecture

    Built on top of vetted open-source on-device ML runtimes (Sherpa-ONNX, ONNX Runtime) optimized for Apple Silicon.

Transparent policies and direct assistance.

  • Policy

    Privacy Policy →

    How on-device speech processing protects your data, our zero-audio-storage commitment, and CCPA/GDPR disclosures.

  • Terms

    Terms of Service →

    Terms governing the use of the app, AI services, subscriptions, user responsibilities, and service availability.

  • Help

    Support & FAQ →

    Frequently asked questions, troubleshooting microphone or model issues, and direct developer contact information.