
Archived App (Last seen on 31 May 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
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Price history
About
Sy: Brainwave Entrainment
Sy is a powerful brainwave entrainment application that uses precisely calibrated light and sound patterns to help guide your brain into specific frequency states. Whether you're seeking deep relaxation, improved focus, enhanced creativity, or meditative states, Sy offers a customizable experience to help you achieve your desired mental state.
Key Features:
Five brainwave frequency presets: Delta (deep sleep), Theta (meditation), Alpha (relaxation), Beta (focus), and Gamma (cognitive enhancement)
Adjustable frequency control from 1-50 Hz for personalized sessions
Binaural beats and isochronic tones for audio entrainment
Optional synchronized flashlight for light entrainment
Unique 60 BPM heartbeat mode for stress reduction
Apple Music integration to play your own music during sessions
Customizable session lengths from 5-30 minutes
Clean, intuitive interface with detailed instructions
Sy combines ancient meditation techniques with modern neuroscience to create a tool that can help with relaxation, stress management, focus, creativity, and mental performance.
Note: Not recommended for individuals with epilepsy, seizure disorders, or photosensitivity. Please consult a healthcare professional before use.
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What's New in Sy
1.1
May 19, 2025
Updated the User Interface. Updated Legal.



