Last App Switcher Switches Between Your Last Two Apps With a Tap

On your TV remote you probably have a button that lets you switch back and forth between two channels.

Last App Switcher works in the same way for the two most recently used apps on your Android handset.

you might change the size and transparency level of the icon to make it less intrusive.

Last App Switcher is much faster than using Android’s built in app switcher.

LAS: Last App Switcher(Free) | Google Play viaWonderHowTo