If you’re looking for the best FreeCell sites, I’ve tested several based on ad...

https://dlf-ne.org/finding-a-freecell-site-that-doesnt-lag-on-mobile-safari/

If you’re looking for the best FreeCell sites, I’ve tested several based on ad load and whether they offer unlimited undo. Some even have mobile drag-and-drop features that actually work well. Sites like Arkadium and CardGames