The "22" likely refers to the of the software, or perhaps a specific build number (v2.2).
In an era of microtransactions, the "Free" aspect of SP Furo 22 is its most subversive feature. There are no ads for luxury towels or premium soaps. The monetization is rumored to come from the "Cool Down" DLC—a paid expansion that lets you exit the tub without the jarring shock of cold air—but the core loop remains untouched. sp furo 22 free