Free & open source · macOS 15+

Speech AI that never leaves your Mac.

voxNest turns your Apple Silicon Mac into a private speech studio — transcribe audio in 52 languages and synthesize lifelike voices, entirely offline, accelerated by MLX. No cloud. No subscription. No account required.

Apple Silicon · 中文 / English included · No setup beyond drag-and-drop

  • 100% on-device
  • No account
  • No telemetry
  • MIT Licensed
Everything you need, nothing you don't

A complete voice studio, in one Mac app.

All inference runs locally on your machine — your audio, your models, your rules.

Transcribe 52 languages

Qwen3-ASR detects the language automatically and adds punctuation natively. Fun-ASR-Nano covers Chinese, seven dialects — even lyrics.

Three ways to speak

Clone a voice from a short reference clip, choose from 9 preset voices, or design a brand-new voice by describing it in plain language.

Streaming synthesis

Audio starts playing the moment generation begins — no waiting for the full render, with one-tap stop anytime.

Subtitles built in

Get clean text, a timestamped timeline, and subtitle-ready SRT — copy or export in one click, no sequence-number clutter.

Hassle-free model manager

Download from ModelScope or HuggingFace — with an HF-Mirror option for mainland China — showing real progress, speed and resumable transfers.

Built for Apple Silicon

MLX-optimized community models run natively on Apple Silicon. Python runtime and ffmpeg are bundled — install nothing else.

Why we built it

Your voice deserves privacy by default.

Zero cloud. Zero tracking.

Every speech API — Whisper, ElevenLabs, Google Cloud — uploads your audio to someone else's servers. We don't. voxNest processes everything on your Mac. No accounts, no telemetry, no upload path exists in the codebase.

Apple Silicon, unleashed.

We built voxNest for the chip in your Mac. MLX — Apple's machine learning framework — lets open models run with native Metal acceleration. Qwen3-ASR transcribes hours of audio in minutes. Qwen3-TTS streams speech faster than real-time on Apple Silicon.

Models you trust, from the community.

Every model in voxNest is a free open build from mlx-community — quantized, tested, and shared on HuggingFace. Download from ModelScope or HuggingFace, with HF-Mirror acceleration for users in mainland China. Resumable. Progress you can actually see.

Pick a model. Or run them all.

Every model is a free community build (mlx-community), quantized for Apple Silicon and managed inside the app.

Speech-to-Text

Both models add punctuation on their own — no extra pipeline.

Qwen3-ASR 1.7B Accuracy pick

The accuracy pick for multilingual audio and long recordings.

52 languages & dialectsAuto language detectionNative timestampsBuilt-in punctuation

Fun-ASR-Nano 0.8B Speed pick

The speed pick for everyday Chinese transcription.

Chinese + 7 dialectsLyrics recognitionLightweight & fastBuilt-in punctuation

Text-to-Speech

All three share one 12 Hz speech tokenizer — downloaded automatically with the first model.

Qwen3-TTS · Base Voice cloning

Provide a short reference clip; voxNest transcribes it for you and matches the timbre.

Zero-shot cloningAuto reference transcript

Qwen3-TTS · CustomVoice 9 preset voices

Serena, Vivian, Uncle_Fu, Dylan, Eric, Ryan, Aiden, Ono_Anna, Sohee — Mandarin, regional accents, English, Japanese and Korean.

MandarinBeijing & SichuanEnglish日本語한국어

Qwen3-TTS · VoiceDesign Describe it, get it

Set gender, age, pitch, pace, emotion, timbre and use case in one sentence.

7-dimension designNatural language

From download to first words in minutes.

1

Install

Drag voxNest to Applications. The Python runtime and ffmpeg ship inside — nothing else to install.

2

Add a model

Pick a model from the catalog and watch it stream in with real progress — resumable downloads.

3

Create

Drop in audio to transcribe, or type text and listen. Every byte stays on your Mac.

Download voxNest

Free, open source, and always local. Downloads served from GitHub Releases.

Apple Silicon

MLX accelerated. Python runtime and ffmpeg bundled — nothing else to install.

Requires macOS 15.0 or later · ≈75 MB download · models download separately on first launch

View all releases on GitHub →

Questions, answered.

Is voxNest really offline?

Yes. The internet is only needed once, to download models. After that, transcription and synthesis run entirely on your Mac — airplane mode works.

Does my audio ever leave my device?

No. There is no account, no telemetry and no upload path. Audio files are processed locally by bundled engines.

Which Macs can run voxNest?

Any Apple Silicon Mac on macOS 15 or later. MLX acceleration is built in — no other hardware needed.

How much does voxNest cost?

Nothing. voxNest is free and open source (MIT license), and every model in the catalog is a free community build.

Can I make SRT subtitles?

Yes. Transcripts export as subtitle-ready SRT built from native model timestamps, plus a timestamped timeline and plain text.

How many languages does voxNest support?

Qwen3-ASR supports 52 languages and dialects with automatic detection. Fun-ASR-Nano excels at Chinese, seven regional dialects, and lyrics.

macOS says voxNest is damaged and can't be opened.

This is Gatekeeper's quarantine attribute — the `.dmg` was downloaded from the internet, not corrupted. Open Terminal and run: sudo xattr -r -d com.apple.quarantine /Applications/voxNest.app. Enter your Mac password, then launch voxNest again.