Follow the directions below for your operating system.
Not sure which Mac you have? Click the Apple in the upper-left corner of your desktop, then About This Mac. If the "Chip" value has "Apple M" followed by some number, like "Apple M2", then you need the Silicon version.
There isn't one. Drindal is a core app you will use each day so it's worth a quick download and install. It's available natively for all your devices and will keep itself updated automatically. The browser was never intended to run full fledged applications in a long jumble of tabs. Your desktop was built to manage all your apps in an efficient way from the start.
Native apps simply offer a far better experience for use cases like ours.