Tennis scoring on your watch

Courtovo counts a tennis match from the first point to the handshake, on your wrist, with no account and no phone. Fourteen formats, every one of them the real thing rather than an approximation.

How tennis is scored

A point is 15, 30, 40, game. At 40-40 it is deuce, and a side must win two points in a row — advantage, then the game. Six games with two games' margin wins a set; at 6-6 a tiebreak decides it, first to seven points with a two-point margin.

Serve alternates every game. In a tiebreak it goes one point, then two at a time, and whoever served the tiebreak's first point receives first in the next set — the handover that is invisible until the following set, and the one most scorekeepers get wrong.

Ends change after every odd total game in a set, and every six points in a tiebreak.

What Courtovo counts

All fourteen presets: best of three with a match tiebreak, best of three with a full third set, best of five, one set, Fast4, an eight-game pro set, a match tiebreak on its own, a ten-point tiebreak, the advantage-final variants and the 2019 Wimbledon final-set rule.

No-ad is a preset, not a setting, and the deciding point is received from the side the receiver chooses — the app records that choice rather than assuming it. Singles and doubles both; the serving order is asked once and derived from there, so an undo can never leave the server wrong.

The watch tells you when to change ends, and buzzes twice once the undo offer has gone.

On the wrist

One click of the bezel is one point, a tap on either half is a point for that side, a swipe up takes it back. See the score screen and the formats.

Other sports Courtovo counts: Padel · Squash · Badminton · Table tennis · Pickleball · Volleyball · Basketball · Football · Handball