Sometimes it's just quicker to switch between items in the detail view, rather than find the Kanban card or table row you need. In Zenkit you can switch easily between items in a few ways.
From the details view, either in the side panel or in the popup, you can click on the < > icons below the item name to quickly switch to the previous or next item in your collection.
In any view, you can use the arrow keys to quickly skip through the items (as long as no field in an open item is active). If you have the detail panel open, it will change to reflect the item you currently have selected.
Navigating between items like that is not possible in the mobile version so far.