Bjango is a free comprehensive set of app icon templates for Photoshop, Illustrator, Sketch, and Affinity Designer. The templates cover Android, iOS, macOS, Apple TV (tvOS), Apple Watch (watchOS), iMessage, Windows, Windows Phone and web favicons. All free and open source, released under the BSD license.
Download freebieBjango: A complete set of app icon templates
PSD
Ai
Sketch