One minute is the workhorse of short timers: long enough to mean something, short enough to throw everything at. It is a plank or wall-sit held to the buzzer, a single round of a quiz or party game, the sixty seconds a child needs to put toys away, or the breather before the next set of a higher-rep lift. Phones set a minute easily; what they will not do is show it big enough to read mid-plank from the floor.
When a minute is a unit rather than a one-off — minute-on, minute-off, or a stack of timed rounds — give it a round count in the editor and each sixty-second block runs into the next, so twenty rounds maps cleanly onto twenty minutes.
A 50 second timer — just under a minute, for a short task or countdown. Repeats as many times as you set.
A 70 second timer — one minute and ten seconds, for when a flat minute is not quite enough. Repeats as many times as you set.