How to obtain the outline plugin on mobile devices?

[executed]

The title should be not on mobile devices, but on IOS.

Also read workaround here:

Plugin: Collapsible blocks

The only workaround is use Joplin mobile web app as PWA instead of the app from damn App Store. Joplin Mobile web app (app.joplincloud.com/) (as PWA through Safari). Here I describe one of known limitations of such approach: