A free program for Android, by paprikanotfound.

Make the most out of your Android device with the handy Split Screen Launcher mobile application. It works in a simple and straightforward way, by splitting your device’s screen into two halves, so you are able to launch multiple applications at the same time. Perfect for multitaskers, this software basically lets you scroll down social media while you are watching a livestream you can miss. No more compromising one app in favor of the other!

The app lets you create shortcuts of which installed apps you want to launch into split screen automatically, too. Maximize your smartphone or tablet usage time when you download and install Split Screen Launcher.