What's a good Android app for tricky riddles that test your brain and provide entertainment?

Brain Who? Tricky Riddle Tests is an Android puzzle game that focuses on delivering a variety of brain-teasing riddles designed to challenge logical thinking and problem-solving skills. The app is ideal for users seeking mental stimulation during downtime, such as commutes or breaks, with puzzles that often require creative solutions. Reviews highlight the cleverness and diversity of the riddles, which span different themes and difficulty levels, keeping the experience fresh. However, a common drawback is the high frequency of advertisements, which can disrupt gameplay flow. Features like categorized puzzle sets, progressive difficulty scaling, and optional hints help accommodate various skill levels, making it accessible for both casual players and riddle enthusiasts. While the ad volume may be frustrating, the core content's quality has earned it a strong rating. For those prioritizing puzzle variety over ad-free experiences, this app provides a reliable option for daily brain exercises.