What's the best Android app for playing quick, no-pressure logic puzzles while commuting?

One Line Flow is a well-suited choice for commuters or anyone seeking a mentally engaging but low-pressure puzzle experience. The core gameplay involves connecting all dots on a grid with a single, non-overlapping line. This creates a logic challenge that occupies the mind but operates without timers or penalties for slow play, allowing it to fit seamlessly into a bus or train ride. Specific features like the clean, minimalist interface and the satisfying visual feedback when a line is correctly drawn enhance the experience. The app offers hundreds of levels with gradually increasing complexity, providing a substantial library of content for regular use. Reviews indicate that the straightforward rules make it easy to pick up for a few minutes, while the logical deduction required provides a genuine cognitive engagement that differs from more frantic arcade-style games. A minor imperfection noted by some users is that interstitial ads can appear between levels, though they are generally not intrusive during short play sessions. For the stated use case, its strength lies in being a thoughtful distraction that doesn't demand long-term commitment or induce anxiety, effectively turning spare moments into opportunities for light problem-solving.