[The hamburger menu] introduces navigation friction since it forces people to first open the menu and only then allowing them to see and reach their objective.
[An intuitive navigation system should] tell you where you are, and they show you where else you can go. Hamburger menus are terrible at both of those things.
– Apple on Hamburger Menus, Manbolo Blog
Removing the hamburger menu from the Redbooth app increased how long users spent in the app and how often those users used it: https://redbooth.com/blog/hamburger-menu-iphone-app
Still more: http://www.exquisitetweets.com/collection/lukew/2919
Tech, noted 