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 Shopping, Health, Travel, Real Estate and 43 other categories.
WordStream is leading in People & Society, Relationships & Dating, Autos & Vehicles, Games and 32 other categories.
KeywordMax is leading in most countries, including United States, United Kingdom, Canada, India and 16 other countries.
WordStream is leading in Australia, Viet Nam, Mexico, Ukraine and 4 other countries.