Watch the edge, not the block
Focus on the left or right edge of the tower below and tap when the moving block edge lines up with it. Edges are easier to judge than centers.
Tap on the rhythm
Blocks move at a steady speed within each floor. Count the beat of one full sweep, then tap on the same beat. Speed rises slowly, so adjust a little each floor.
Bank perfects early
The first 15 floors are slow. Go for perfect drops here to build a wide, safe tower before the speed picks up.
When you slip, stay calm
A narrow block is still playable. Slow down your focus, aim for the center, and rebuild with a streak of perfects.
Put it into practice now and try to beat 50 floors.