A nice feature of TouchWiz UX is what Samsung calls "Mini Apps". Tapping a small up arrow at the bottom of the screen brings up a tray of mini apps — a task manager, calendar, world clock, pen memo, calculator and music player. The mini apps tag applies because these apps appear as an overlay on top of the screen, allowing you to continue working on any other open applications. The mini apps can be dragged to any part of the screen, and will remain active until they are closed — they even remain on the screen when you open another app, negating the need to switch between apps like usual. Shown here is the calculator mini app.