Manage HeyCyan glasses. The HeySyan app makes it easy to manage your glasses and keep them up to date. Import, view and share your captured photos and videos in the Gallery tab. Set up and customize voice control features, which allow you to say "Hello HeySyan" and go hands free* Manage your information and privacy settings, which allow you to connect your calling, messaging and music services and stay in control of your privacy. Learn and explore the features and capabilities through interactive product tours. *Certain features and functionality depicted are device-dependent and will vary by region.