Custom Domain - Mobile App

Hi all. Newbie here so hopefully I’m not repeating the same old questions……

I have a custom domain ( I want a landing page made with bubble ( and a mobile app made with bubble also using a sub domain (

What’s the best way to achieve this? Maybe it’s obvious but I don’t see how to divert the mobile users to app_index by default when they login.


You can get the width of an element in a workflow and “Do when condition is true”: Element’s width < 600 (or whatever you determine to be reasonable for a phone size) then navigate to the correct page if it is not already the current page which can also be determined by using bubble’s built in “This url” contains “app”.

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Fantastic. Thank you. Very much appreciated.