This is a free Sketch UI kit by DeveloperTown covering Android Oreo (Android O): 25 hand-crafted vector screens spanning notification shades, settings, email, music player, calendar, Hangouts, camera, and video, matching that release's actual system UI.
Having period-accurate Oreo components on hand saves rebuilding that specific Android look from memory or screenshots when a project genuinely needs to reference or emulate it.
Useful mainly for historical or educational reference against current Android: not a starting point for new app design, since Oreo (Android 8) is many versions behind today's Material Design.
The official developertown.com page for this kit now 404s (DeveloperTown has since pivoted into a general software consulting agency), but the file still circulates via mirrors like Sketch App Sources and Dribbble.
A hand-crafted Sketch UI kit for Android Oreo, by Developer Town.
