Name: Squash Score - Match Scorekeeper
Author: RiversideArt

Squash Score keeps the score of a squash match on your watch so you can keep your eyes on the ball. Point-a-rally scoring, games to 11 by default (5 to 21 in settings), best of 1, 3 or 5 games, with win by two points on or off.

It shows the points, the games won and the serving side. One press scores a point; a wrong press is one Back away.

Controls:
Up button or top half of the screen: point for us
Down button or bottom half of the screen: point for them
Back: undo the last point
Menu: new match (press twice during a match, so a slip does not wipe the score)
The rules are set in the Garmin Connect app, and a match in progress keeps the rules it started with.

One-time purchase with no subscription, seven days free to try, and no permissions asked.