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What is Celyn?

Celyn is a real-time translation application designed specifically for macOS that integrates directly into the system's notch for a seamless user experience. Developed to provide invisible subtitles, it allows users to understand audio from Zoom calls, YouTube videos, podcasts, or in-person conversations without cluttered windows. The tool solves the problem of language barriers in digital and physical environments by providing instant, on-device translation across 19 different languages. Because it uses Apple's built-in speech and translation frameworks, all processing happens locally, ensuring that audio never leaves the user's Mac. It is ideal for professionals, students, and language learners who require a private, offline, and unobtrusive translation solution. The workflow is simplified to a single hotkey, making it accessible for anyone needing immediate linguistic assistance.

AI Tool Review Summary

Performance Score

4.7/5

Content/Output Quality

High, real-time, and private

Interface

Minimalist and notch-integrated

AI Technology
Speech RecognitionNLP
Purpose of Tool

To provide real-time, on-device translation and subtitling for Mac users.

Compatibility

macOS 15.0 Sequoia or later on Apple Silicon and Intel Macs.

Pricing

One-time purchase with a free trial

Features

Features with the highest value for users are highlighted here.

Real-time notch subtitles

On-device local processing

System and microphone audio capture

Support for 19 languages

Offline translation capabilities

One-tap hotkey activation

Privacy-first architecture

One-time purchase model

Who Is It For?

Remote Professionals

Language Learners

Privacy-Conscious Users

Digital Nomads

International Students

Content Consumers

Journalists

Software Developers

Event Attendees

Minimalist Enthusiasts

Pricing

Free Trial

$0/free
  • 7-day access
  • All 19 languages
  • On-device processing
Popular

Lifetime License

$14/one-time
  • One-time purchase
  • Mic and system audio capture
  • Free updates via Sparkle

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Pros & Cons

Pros

  • Processes all audio locally to ensure maximum privacy and offline functionality.
  • Features a simple one-time payment model instead of recurring subscriptions.

Cons

  • Requires the latest macOS 15 Sequoia or newer to function.
  • Language support is currently limited to 19 specific options.

FAQs

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