The portable bundle and the standard installer give you the same detector, but they behave differently on disk — and the right pick depends on how you work.
RetinaFace ships in two flavours, and new users often hesitate over which to grab. Both contain the identical detection engine and produce identical results, so this is not a question of quality. It is a question of how the software lives on your machine and what trade-offs suit your situation.
What the installer does
The standard installer behaves like any normal Windows application. It writes files to a Program Files directory, creates Start menu and desktop shortcuts, registers an uninstaller, and sometimes associates sample file types so they open with RetinaFace. This is the most familiar experience: install once, launch from the Start menu, and remove it later through Windows Settings like any other app.
What the portable build does
The portable build skips all of that. You extract one folder and run the program directly from it. Nothing is written to Program Files, no shortcuts are created, and no entries are added to the registry. To remove it, you delete the folder. Because everything it needs lives inside that single directory, you can drop it on a USB stick or a shared drive and run it on another machine without installing anything.
Choosing between them
Reach for the installer when RetinaFace is a tool you will use regularly on your own computer and you want it to behave like a first-class app, complete with shortcuts and a clean uninstall. Reach for the portable build when you cannot or would rather not install software — locked-down work machines, lab computers, or quick tests on a friend's PC — or when you want to keep several versions side by side without them interfering with one another.
Practical differences to keep in mind
A few details are worth knowing. The portable build keeps its settings inside its own folder, so copying that folder carries your configuration with it. The installer stores some settings in your user profile, which means they persist across reinstalls but stay on that one machine. Updates are also handled differently: with the installer you typically run a newer installer over the top, while with the portable build you replace the folder contents. Neither approach is harder, they are just different routines.
Can you switch later?
Yes, and it is painless. Nothing locks you into your first choice. If you started with the portable build and later decide you want shortcuts and a registered app, install the standard version and delete the portable folder. If you started with the installer and want something more self-contained, uninstall it and extract the portable build instead. Your detection results will be the same either way, so switch whenever your workflow changes.
The short answer
If you are unsure, install the standard version on your main computer — it is the smoothest day-to-day experience. Keep the portable build in mind for the moments when installing is inconvenient or impossible. Both are fully supported, and both deliver the same accurate RetinaFace detection.