In general, you should install apps outside of your phone's app store only if you have a very good reason to.

We examine the different ways to download and install Mac apps, whether from the Mac App Store or the internet, and what to do when apps won't install.

Apple's macOS Sequoia now lets you install apps on external SSD drives instead of taking up space on your internal one — but it doesn't tell you this, so here's how to do it.

Besides allowing apps from the App Store and identified developers, a third option was Anywhere, and meant exactly that. Install any compatible software from anywhere online and take your chances.