Home Run Swing Timing: Hitting the Centre of the Window

Updated October 2026

Home Run is a single-button batting game: a pitch comes in, you tap, and the closer your tap is to the moment the ball reaches the plate, the further it flies. Every hit adds its distance in metres to your total, and three outs end the game. It sounds like pure reflexes, but the numbers behind the swing reward a particular kind of timing. This guide explains how contact quality is scored, why an early swing and a late swing are treated exactly alike, how the challenge tightens with every pitch, and what makes the biggest difference to your total.

What happens on every pitch

The first tap on the field starts the game, and every tap after that is a swing. You can tap anywhere on the playing area. Each pitch travels from the right side of the field to the batter in somewhere between 0.85 and 1.3 seconds, chosen at random, so no two pitches share the same rhythm. The ball's arrival at the plate is the target moment.

Your swing is judged by how far your tap is from that moment, measured at the instant you touch the screen rather than at the next drawn frame. If you are within the contact window you hit the ball; outside it you miss. Letting a pitch go by is also an out. After a hit the ball flies for one second, the distance is added, and the next pitch begins about 0.6 seconds later, or 0.95 seconds after a home run. After an out the next pitch comes after about 0.75 seconds. The third out ends the game.

How distance is calculated

Contact quality is a number from zero at the edge of the window to one at the exact moment of arrival. The distance is 18 metres plus up to 114 more, scaled by that quality raised to the power 1.4, plus a random wobble of up to three metres either way. So any contact is worth at least 18 metres, a perfect swing is worth about 132, and anything reaching 100 metres clears the fence for a home run.

The power of 1.4 makes the curve steep near the centre. Half-quality contact gives only about 61 metres. To clear the fence you need roughly the best fifth of the window; in other words your error must be within about 21 percent of the window's half-width. Precision matters far more than simply making contact.

A window with two equal sides

The contact window is calculated as an equal distance either side of the arrival moment, starting at just under 200 milliseconds on the first pitch. If you never swing, the pitch is called as an out once the ball has gone past the plate by the full width of the window (and never sooner than 130 milliseconds). That cut-off is checked against the clock, not against the next drawn frame, so it falls at the same moment on a fast or a slow phone. The result is that the late side of the window is exactly as wide as the early side on every pitch: on the first pitch you can be nearly 0.2 seconds early or nearly 0.2 seconds late and still make contact.

Distance only depends on the size of your error, not its direction, so an early swing and a late swing by the same amount travel the same distance. There is no safe side to lean towards: deliberately swinging a little early or a little late only moves you away from the centre. When you are unsure, aim for the arrival moment itself.

Every pitch gets harder

The game has no difficulty ceiling. With each pitch, the contact window shrinks by 1.2 percent and the pitch time by 0.4 percent, with no lower limit. The figures below are calculated from those rules.

• Pitch 1: window about ±198 ms, home-run zone about ±41 ms.
• Pitch 20: window about ±157 ms, home-run zone about ±33 ms.
• Pitch 50: window about ±109 ms, home-run zone about ±23 ms.
• Pitch 100: window about ±60 ms, home-run zone about ±13 ms.

The pitch-time decay is small compared with the random spread, so the next pitch is not always faster than the last. By the hundredth pitch, though, the range has narrowed to about 0.57 to 0.87 seconds. Sooner or later the window becomes smaller than your natural timing variation, and the outs come quickly.

What our simulation says about your total

To see what really drives the score, we simulated thousands of games with a batter whose timing error follows a bell curve. A batter whose typical error is about 40 milliseconds and who is centred on the arrival moment averaged roughly 8,800 metres over about 100 pitches. Giving the same batter a constant 30-millisecond bias, early or late, cut the average to roughly 6,900 metres. Halving the spread had a bigger effect still. A batter with a 60-millisecond spread averaged around 5,400 metres, and one with 25 milliseconds over 13,000.

Two lessons follow. Consistency is worth more than anything else, because every millisecond of spread costs you both distance per hit and pitches survived. And a habitual bias is the most fixable flaw: if most of your hits feel slightly early or slightly late, shifting your timing by a few hundredths of a second can be worth thousands of metres.

Practical timing habits

• Track the ball, not the clock. Because the pitch time changes every throw, counting a fixed rhythm will be wrong most of the time. Follow the ball with your eyes and time your tap to its arrival at the batter.
• Use the banner as feedback. A home run banner means you were inside the best fifth of the window. Short hits under 50 metres mean you were near its edge; note whether that felt early or late.
• Keep your thumb resting just above the screen. A long finger travel adds variable delay. A small, consistent motion gives a more consistent tap.
• Do not switch apps mid-game. The pitch keeps travelling in real time. If you leave, it is very likely to pass the plate and count as an out.

Your best total is saved on this device as soon as you beat it, and any game above zero can be saved to the Hall of Fame from the result card. A good target for a first session is a game of over 50 pitches; once that becomes routine, work on the centre of the window to turn singles into home runs.