Tennis scoring is famously confusing the first time you encounter it. Points inside a game are called 15, 30, 40 — and then the next point either wins the game or, if both players are level at 40, becomes deuce. From deuce you have to win two points in a row: the first is called advantage, the second wins the game. Win six games and you take the set. Win two sets (or three in a Grand Slam men's match) and you take the match.
For the full breakdown — including tiebreaks, no-ad scoring, ad-in vs ad-out, and how to call the score out loud — read the complete tennis scoring rules guide.
Every tennis scoring app on the App Store assumes you want to log a season of matches, follow your friends, share to a feed, and pay for a premium tier you'll never use. RALLY assumes one thing: you are about to walk onto a court and you want a scoreboard that works the moment you open the page. No signup. No sport selection wizard. No notifications.
The whole screen is two giant tap targets, sized for sweaty thumbs at arm's length. Voice calls mean you do not have to squint between points to confirm the score. You can rename players in two seconds. Undo is one tap. Reset is one tap. The page caches itself for offline use after the first load — courtside Wi-Fi is not a guarantee at most clubs.
Honest disclosure: the version of tennis that ships in RALLY today is a simplified scoreboard. Instead of 15/30/40/deuce/ad inside each game, it uses first to 4 points wins a game with win-by-2. First to 6 games wins the match. This keeps the two-tap UI honest and avoids fake deuce logic that pretends to be ITF-compliant when it isn't.
Full tennis scoring with proper 15/30/40/deuce/ad point names, best-of-3 sets, and a 7-point tiebreak at 6-6 is on the immediate roadmap. If you want the full version, the rules page already explains exactly how it works so you can keep score on paper alongside the app until then.
Club players who play casual sets after work and want an honest count without writing on a damp piece of paper. Coaches running drills who need a visible scoreboard everyone can see from across the court. Parents at junior matches who want a simple way to track a child's progress through a set without doing the maths in their head. Anyone who has ever lost the score at 3-3 and felt that small shame.
If you play competitive USTA league tennis with strict rules, RALLY's simplified MVP isn't quite for you yet — wait for the full ITF-compliant scoring update. For everyone else, the answer is: open the page, tap left or right, and stop arguing about the score.
Yes. RALLY is a free tennis scorekeeper that runs in your phone browser. No account, no ads, no app store. Two huge tap targets and the score called out loud after every point.
Not yet. The current MVP uses a simplified model: first to 4 points wins a game (win by 2), first to 6 games wins the set. Full 15/30/40/deuce/ad scoring with proper sets and tiebreaks is on the roadmap. The /rules/tennis-scoring page explains the full rules in detail.
Yes. Prop your phone on the bench, tap left or right after each point, and the scoreboard tracks games and sets for you. Voice calls mean you do not need to look at the screen between points.
AI Ref is currently optimised for squash and pickleball singles. Tennis support is planned but not yet shipped. For now, tennis uses the manual two-tap scoreboard.