Browsing as guest
No portals on your start screen. Tap the gear to pick some.
Light or dark is used on this launcher and passed to every portal you open from here.
How many tiles across on a phone.
Choose which portals show on this screen, then drag or use the arrows to arrange the tiles. New portals stay on until you hide them.
Add Portals to your Home Screen to open this launcher like an app.
On iPhone use Safari: tap Share, then View More if needed, then Add to Home Screen.