There are many reasons to remotely control your Mac with an iPhone. Depending on the application, you need different apps..
iphone and Mac are an ideal duo. Also because the Mac can be wonderfully controlled remotely with the smartphone. Regardless of whether it is about media content or about managing the computer: With the iPhone you can also access your Mac while on the move - provided you use the right app and keep a few setup steps in mind.
Everyone knows that: You are listening to beautiful music on the iMac and suddenly one of these songs comes out of the media library that you really don't like. Now the run starts: Let's go to the Mac, press the key to exit the screen saver, enter your password or thumbprint, bring iTunes to the front and select the next song. This would be much more convenient with the iPhone, because you have it in your pocket anyway. All you need is the free iTunes Remote app from the AppStore.
Of course, you can also control the entire Mac remotely with the iPhone. There are many ways to do this, the simplest is likely to be the " screen sharing " function : This is a so-called VNC connection. "VNC" stands for "Virtual Network Computing" and allows Macs and PCs to be controlled by other devices. The setup is very easy:
Last but not least, the third variant: You are on vacation and suddenly your grandpa calls that he has a problem with his Mac or PC. For these cases (or for a simple connection to the Mac at home without VPN) there is the wonderful TeamViewer app: This allows remote control in a few simple steps. That's how it works: