Design a voice, work from a reference, and shape longer performances in a native macOS workspace.

Apple Silicon · macOS 14+ · Local processing

Get started · Inside the studio · Capabilities · Privacy · Model licences

Source-only · 3.7.0. Build locally; no official app download is provided. Release setup · Managed setup on main · Model terms. Models and dependencies are downloaded separately under their own licence terms.

Inside the studio

Real workspaces. Synthetic demo material. Each plate links to its original, full-resolution screenshot.

Design

Choose supported speaker attributes and start without a reference recording.

Clone

Import a reference, supply its transcript and shape the next take with pronunciation and generation controls.

Long Form

Edit production chunks individually and retry the section that needs another take.

Performance

Prepare speech segments with fixed settings, deliberate pauses and independent retries. This view shows a prepared production before rendering; rebuilding a master becomes available once its speech segments have audio. These controls change timing and audio loudness, not emotional acting.

The interfaces are authentic VoxAster 3.7.0 captures; the surrounding silver forms are illustrative artwork, not measured audio or additional controls. No personal recordings or projects appear. Screenshot provenance · Art direction and composition notes.

What you can make

From a script to a finished take

Start with a designed voice or a reference recording. Hear a few variants, keep what works and refine the words that need attention. For longer pieces, edit a chunk or retry a Performance segment without starting the whole production again.

Generation runs on your Mac through the separate OmniVoice model. VoxAster brings its controls into a native SwiftUI workspace alongside playback, WAV export and production tools. It is an independent app, not an official k2-fsa product.

Performance controls change timing and audio loudness, not emotional acting. Pause/Louder/Quieter buttons insert the app's supported directions; native vocal events are separate model-supported sounds. See script controls and examples for exact syntax and boundaries.

Local binary preparation

Managed setup on main

Current main includes a validated managed first-run setup that installs the pinned runtime and models. After VoxAster itself has been built from source, this setup does not require users to separately install Homebrew, Python, Git, FFmpeg or Xcode.

VoxAster remains source-only: users must build the app themselves, and no official downloadable app or signed/notarized binary is provided. The official v3.7.0 release remains unchanged and uses its original release setup instructions below.

See the managed runtime design and artifact catalogue.

Get started

Requirements

• An Apple Silicon Mac running macOS 14 or newer.
• Xcode Command Line Tools, including Swift and the macOS SDK.
• Homebrew, Python 3.12, Git and FFmpeg.
• Internet access for initial dependency/model downloads and several GB of available storage. Setup time varies with your Mac, connection and cache; no minimum RAM guarantee has been established.

Intel Macs, Windows and Linux are not supported by this native app. Voice Design can be your first workflow without a recording; cloning requires a voice/reference you are authorized to use. Microphone permission is needed only when recording.

Build and open the released version

1. Install Apple's command-line tools if you do not already have them. Finish any macOS installation prompt before continuing:

   xcode-select --install
   

2. With Homebrew installed, obtain the prerequisites:

   brew install python@3.12 ffmpeg git
   

3. Download the tagged 3.7.0 source, prepare the runtime, then build and open VoxAster:

   git clone --branch v3.7.0 --single-branch https://github.com/ninja8170/VoxAster.git
   cd VoxAster
   ./setup-runtime.command
   ./verify-runtime.command
   ./build.command
   open .build/VoxAster.app
   

   Setup downloads the pinned dependencies and models; it does not install an app into Applications. It creates a per-user runtime and refuses to overwrite an existing one. Already used OmniVoice/VoxAster on this Mac? Follow the existing-runtime instructions instead of repeating setup.

4. Wait for Ready, then open Voice Design to choose supported voice attributes, enter a short script and generate a first take. For Voice Clone, select a clean reference and provide its transcript to avoid an optional transcription-model download. Listen, refine and export a WAV.

Local builds are ad-hoc signed, not Developer ID signed or notarized. Do not disable Gatekeeper globally. See setup details, optional installation and runtime pins for the source-archive route, shared data locations and troubleshooting.

Local processing and privacy

VoxAster sends scripts and reference audio to its local backend on your Mac for generation and transcription. The audited processing paths do not upload voice/audio to an external speech service. No application analytics or crash-upload system was found in the release audit; macOS diagnostics are separate.

Internet access is used where documented to download dependencies and models. Optional reference transcription may download Whisper when first needed. Offline workflows require all their assets to be cached first.

Your Library, History, projects, drafts and recordings are local user data; they are not shipped with the source or app bundle. The app is not sandboxed, and legacy storage names are preserved for existing users. Read the privacy and storage details.

Models and licensing

The app's MIT licence does not override model terms. Free download does not imply unrestricted commercial use.

See THIRD_PARTY.md for full distinctions, required notices and optional dependencies. Training, LoRA/fine-tuning and dataset token extraction are not included. Higgs materials/outputs must not be used to improve other large language models. Boson requires separate permission above 100,000 annual active users across your/affiliates' products or services in the preceding calendar year; other licence and acceptable-use conditions also apply.

Required model attribution

Built with Higgs Materials licensed from Boson AI USA, Inc., Copyright Boson AI USA, Inc., All Rights Reserved and Meta Llama 3 licensed under the Meta Llama 3 Community License, Copyright Meta Platforms, Inc., All Right Reserved.

Built with Meta Llama 3; based on Meta Llama 3.

The Boson agreement, Meta agreement and acceptable-use policy and Notice accompany this source and built app. These restricted community licences are not MIT, Apache-2.0 or unrestricted open-source terms. Use only voices and recordings you are authorized to use.

Help and development

• Setup or startup problems? See troubleshooting.
• Pronunciation, pauses or vocal events? Read script controls. Unsupported acting tags are rejected; Markdown is not acting direction.
• Contributing? Read CONTRIBUTING.md. Run ./test.command, ./verify-runtime.command and git diff --check for code changes. Real listening acceptance remains separate from automated tests.
• Reporting a problem? Use Issues with non-sensitive examples. Report vulnerabilities through the guidance in SECURITY.md.
• Release history: CHANGELOG.md. App licence: MIT.