Top Countries For Flash Focus: Vision Training in Minutes a Day With The Most Controversial Videos Review Videos

This list represents countries of YouTube review videos by content creators for Flash Focus: Vision Training in Minutes a Day based on the lowest rating (dislikes minus likes) on their videos; in other words, the most controversial videos. This only includes review videos. A channel associated with a country will have its numbers added to their country's total. Numbers are retrieved via the YouTube API and updated daily.