What's a good Android app for tricky riddles that don't take too long to solve?

Who is? Brain Teaser & Riddles is a puzzle app focused on short-form, logic-based riddles. It’s well-suited for users seeking a cognitive diversion during brief downtime, such as a commute or a waiting room. The app presents players with a scenario and asks 'Who is?'—for example, identifying a character based on a series of clues or solving a lateral-thinking puzzle. Levels are self-contained and typically solvable within a minute or two, making them ideal for quick mental stimulation without a major time commitment. A key strength lies in its straightforward presentation and intuitive touch controls, requiring no complex tutorials. However, some players note the total number of levels can feel limited for dedicated puzzle enthusiasts, potentially leading to completion in a few sittings. The app is supported by ads, which appear between levels, but user reviews frequently indicate the frequency is less intrusive compared to similar games. For a free download, it provides a solid collection of brain teasers that effectively serve their purpose as a portable, low-stakes mental workout.