If you need a "proper" native mobile app for Identity Manager, Cyberinc (a One Identity partner) is developing an app for that... with both Android and IOS supported.
Although it provides some common functionality with the web portal, it doesn't need the web portal to be operational in mobile mode, so even if you did disable the mobile views in the portal you would still be able to use the app.
If you need a "proper" native mobile app for Identity Manager, Cyberinc (a One Identity partner) is developing an app for that... with both Android and IOS supported.
Although it provides some common functionality with the web portal, it doesn't need the web portal to be operational in mobile mode, so even if you did disable the mobile views in the portal you would still be able to use the app.