If you miss a proper way to manage your contact groups and contacts on Android 5 and up, don't despair. Mad Contact Groups is the ultimate contacts manager! - Create, delete and modify your contacts and place them in contact groups to keep them organized! - Create, delete, merge and modify your contact groups (Starred in Android, Coworkers, Friends, ICE, etc.) easily from a great looking material design interface. - Send emails and sms to all or some members of your contact groups with a sing