The UK is live first. The US version — same mechanic, same trust standard, adapted to US regulation (OSHA-based content instead of COSHH/BICSc) and pricing — is drafted and ready to build out once the UK system is proven.
What's different for the US
Test content based on OSHA's Hazard Communication Standard rather than UK COSHH/BICSc guidance
State-by-state notes where cleaning/business licensing varies