Yes, you can create a scheduled homepage for any of your homepages and assign the smartphone or tablet option to them.
This is useful if you only need certain information from your desktop homepage to be available on the mobile app version of the homepage. After your scheduled homepage has been created, from the Manage Homepages menu, select smartphone or tablet from the device type drop-down.
If the homepage has been set for smartphone, and all users are required to view it, assign the audience All active intranet users. Anybody who then accesses the homepage on the mobile will only see the mobile version. It's important to keep the mobile version up to date alongside the main desktop homepage as they will be two separate homepages and will need managing.
Tip: Don't forget to optimise your homepages for mobile! When editing your homepage, hover over the pencil toolbox and click on the mobile phone icon pop-up that appears. Use the mobile designer to group applets and design the mobile homepages.