In terms of market share, KeywordMax is clearly lagging behind, losing to WordStream in all segments.
KeywordMax has better usage coverage in more websites categories. Including Business & Industry, People & Society, Shopping, Health and 50 other categories.
WordStream is leading in Relationships & Dating, Autos & Vehicles, Construction & Maintenance, Games and 28 other categories.
KeywordMax is leading in most countries, including United States, United Kingdom, Spain, Canada and 13 other countries.
WordStream is leading in Australia, Mexico, Bulgaria, China and 8 other countries.