FilterKit Pro learns which filters each visitor uses most and reorders the sidebar to put their favorites first.
How It Works:
Logged-in customers: Preferences saved in their account. Works across devices.
Guest visitors: Uses a small browser cookie. No personal data stored on your server. Cookie duration is configurable (default: 30 days).
What changes: Only the order of filters. If someone uses Color and Brand more than Size and Rating, those move up. Options and behavior stay the same.
Turn it on in WooCommerce, Settings, FilterKit Pro, Features, Personalized Filter Ordering. You can set the minimum visits before it kicks in (default 3), cookie duration, turn on geo-based size defaults (US sizes for US visitors, EU for Europe), and reset data for all users.