RoomKey is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Whittl has better usage coverage in more websites categories. Including Beauty & Fitness, Beauty, Health, Internet & Telecom and 2 other categories.
RoomKey is leading in Travel, Accommodation & Hotels, Real Estate, Recreation & Hobbies and one other category.
RoomKey is leading in most countries, including United States.
Whittl hasn't got a lead over RoomKey in any country.