Hexa Time

Hexa Time is listed here under Puzzle. There is no launcher and no install between you and it. Taps and swipes are the whole vocabulary — a phone plays it best. Listed under block, color, match 3, matching, number.

It is drawn for a tall screen, so it fills a phone held upright rather than a wide monitor. Everything runs client-side, so there is nothing to set up before you start.