If you have five spare minutes, Fruit Harvest will fill them. Everything happens on one screen with waves of 2-4 flying items with 6% bombs, and the whole thing runs straight in the browser - no downloads, no sign-ups, no fuss.
Swipes are free-form - a long slashing drag can catch three pieces of fruit in one motion, and that is how big combos happen. The gesture also has a cooldown per fruit, so waving the finger around randomly scores less than one committed slash.
It suits anyone with a queue to wait in or a kettle to watch: students between classes, commuters, parents stealing ten quiet minutes. There is no meta-progression to lose and nothing to catch up on - a week away costs you nothing but a little sharpness.