FonoX - High-Quality Text-to-Speech, Fully Local on macOS

FonoX is a native macOS Text-to-Speech app powered by a modern on-device TTS model, built for speed, privacy, and truly unlimited generation.

Turn text and documents into natural-sounding audio — fully offline, with no cloud services, no tracking, and no usage limits.

✨ Key Features

🔊 On-Device TTS Engine

FonoX runs a local Text-to-Speech model directly on your Mac.
No internet connection required. No data ever leaves your device.

Supported languages:

• English (US)
• English (UK)

Available voices:

🇺🇸 English (US)

• Female: Alloy, Aoede, Bella, Heart, Jessica, Kore, Nicole, Nova, River, Sarah, Sky
• Male: Adam, Echo, Eric, Fenrir, Liam, Michael, Onyx, Puck, Santa

🇬🇧 English (UK)

• Female: Alice, Emma, Isabella, Lily
• Male: Daniel, Fable, George, Lewis

Choose the voice that best fits your content — narration, learning, or long-form listening.

📄 Multiple Input Formats

Convert content from:

• Markdown (.md)
• Plain text (.txt)
• PDF (.pdf)
• EPUB (.epub)

🎧 Audio Output Formats

Export high-quality speech as:

• WAV
• M4A

🔐 Privacy-First by Design

• 100% local processing
• No servers, no cloud APIs
• No tracking, no analytics

Your text and files stay private — always.

♾ Truly Unlimited Generation

• No subscriptions
• No credits
• No rate limits

Generate as much audio as you want, for as long as you want, directly on your Mac.

🖥 macOS-Native & Apple Silicon Optimized

• Native macOS app
• Supports macOS 15.6 and later
• Optimized for Apple Silicon (M-series Macs)
• Smooth performance for long-form documents

Who is FonoX for?

• Writers & bloggers
• Indie developers
• Educators & students
• Anyone who needs fast, private, offline, unlimited Text-to-Speech on macOS