It's a very simple chrome extension using which you can use custom phones mock (currently 2) instead of default phone mockup of xthunkable builder.
In the above screenshot you can see there is the iOS phone mockup [ iPhone 8 Plus ] insted of default, you can switch this to android just by clicking the button at the top “Switch to Android/iOS“. This is button is added there by this extension so you can easily switch between iOS and Androis mockup easily while creating your project.
How to install and use this extension? I have explained step-by-step process of Download>Install>Use this extension on my webiste Cttricks.com Also note that this you’ll have to manually download it and add to your chrome extensions as i haven’t published this on chrome store yet.
Feel free to reach out to me, if you have any query or suggestion related to this extension. Enjoy!!