OpinionLab is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
OpinionLab has better usage coverage in more websites categories. Including Travel, Business & Industry, Accommodation & Hotels, Shopping and 58 other categories.
Slice Factory is leading in People & Society, Arts & Entertainment, Computer & Electronics, Software and 44 other categories.
OpinionLab is leading in most countries, including United States, United Kingdom, Canada, Germany and 48 other countries.
Slice Factory is leading in India, France, Ukraine, Sri Lanka and 14 other countries.