Swimming Pro is a rhythm-and-timing sports game: you build speed with a stroke rhythm rather than holding an accelerator, and the turns at each wall are where races are won or lost.
That rhythm is what makes it more interesting than a button-mash — an even, well-timed stroke is faster than frantic input, which is also true in the pool.
Maintain an even stroke rhythm rather than pressing as fast as possible — the game rewards timing, not frequency.
A great deal. A clean turn with a strong push-off gains more than a fast length does.
Yes — tap in rhythm. Nothing to install.