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Purchase $14
Translation should be invisible
Lives in your notch
Subtitles where your eyes already are. No windows, no clutter.
Completely on-device
Your audio never leaves your Mac. Everything processed locally.
19 languages
English, Portuguese, Spanish, French, German, Japanese, Korean, and more.
Mic, system, or both
Zoom calls, YouTube, podcasts, or in-person conversations.
One hotkey
Press ⌥T to start translating. Press again to stop. That's it.
Works offline
No internet needed. No API keys required. No accounts to create.
Your words stay yours
Everything is processed on your Mac using Apple's built-in speech and translation frameworks. No audio recorded, no transcripts saved, no data sent anywhere.
Read our privacy policyFrequently asked questions
Celyn requires macOS 15.0 (Sequoia) or later. It works on both Apple Silicon and Intel Macs.
Yes, entirely. All speech recognition and translation happens on-device using Apple's built-in frameworks. No internet connection is required after the initial language model download.
Arabic, Mandarin Chinese, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese (Brazilian), Russian, Spanish, Thai, Turkish, Ukrainian, and Vietnamese.
No. Celyn processes audio in real time and discards it immediately. Nothing is recorded, stored, or transmitted anywhere. Your audio never leaves your Mac.
One price, forever
No subscriptions. No hidden fees. Pay once, use forever.
One-time purchase. 7-day free trial.
19 languages- Mic + system audio capture
- Completely on-device & private
- Free updates via Sparkle
- macOS 15+
Requires macOS 15 Sequoia or later