Is it possible to configure TeXstudio for distraction free writing?
While there is no explicit distraction-free mode in TeXstudio, it's configurability allows to hide almost all GUI elements.
First, you can use the fullscreen mode (F11 or double-click on an empty part of the menu bar).
Then hide unwanted elements:
View -> Show
- Context menu on menu or toolbars to show/hide toolbars
Options -> Internal PDF Viewer -> Auto-hide toolbars in Embedded Mode
Options -> Advanced Editor -> Appearance ->+
Show Line Change State | Show State Panel | Show Line Numbers
Note: the toolbar settings are saved separately for normal and fullscreen mode. All other settings are global.