Zulip is an amazing open source android app for communication. I came across the app and I created a new logo/icon. The aim was to create a logo that looks clean and sleek and also some level of creativity.
Github: https://github.com/zulip/zulip
Offical website: https://zulipchat.com
Googleplay: https://play.google.com/store/apps/details?id=com.zulipmobile
Font: https://fonts.google.com/specimen/Fredoka+One
Tools used: Adobe Illustrator
