Offerpop is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Offerpop has better usage coverage in more websites categories. Including Arts & Entertainment, Shopping, People & Society, Food & Drink and 55 other categories.
Stackla is leading in Travel, Tourism, Sports, Business & Industry and 37 other categories.
Offerpop is leading in most countries, including United States, France, Germany, Poland and 30 other countries.
Stackla is leading in Australia, United Kingdom, New Zealand, Japan and 17 other countries.