Recurring Jobs can be created in the App when you create a new job. But the Recurring Job Profile cannot be edited on the App once it has been created. You can only edit the individual jobs that are created from the profile.
To create a new Recurring Job Profile via the App, go to Jobs > New or the + symbol in the bottom right > Fill out the details, and at the bottom of the job creation page is the option to make a Recurring Job.
Any edits that you wish to make to the Recurring profile itself will need to be made through the Web Portal > Jobs > Recurring Job Profiles.