Nintendo's philosophy in developing game consoles, which differs from that of Sony and Microsoft, does not prevent their machines from becoming best sellers right after launch. This has also happened with Nintendo Switch, a hybrid video game console with great popularity.
Turn your Android into a controller for multiplayer games
You might want to invite a friend over to play a game on the Switch but you only have one controller, right? This is no longer a problem if you have an app like JoyCon Droid that can turn a phone into a controller for this game console.
The app turns a mobile phone into a Pro Controller and can even take advantage of phone features such as the gyro for motion control. It supports both wireless and USB cable connection. However, don't think you'll be able to recycle an old phone you have lying around the house unused - or at least not at the moment - the requirements mean only Android 9.0 or later will work.