Installing in a template

Will be available to all qubes based on the template. Updates via routine updates (normal way of updating).

[Recommended] When software is already available in template's package manager

Just follow the official documentation or se a practical example here.
When software is available as an additional package repository only -- example https://forum.qubes-os.org/t/5221

Installing in your `app qube` instead of the `template`

Will only be available in the app qube where you installed it.

> ⚠️ Updates are simple but manual (one click for qube apps and one-command for snap packages.

When the software is available as a "snap package" (search availability here) Read more at Installing Snap Packages (official documentation)
When the software is available as a "flatpack package" (search availability here). Qube Apps - developed by Micah Lee, a trusted community member.

Standalone qubes are dedicated qube. You can't create templates based on them.

> When do I need this? > Here you'll install a .deb or .rpm for download and you only want to use this software in a single qube.

⚠️ Updates are manual and tiresome. It's basically repeating the whole install process! (bad security practice)