ITF Rules of Tennis
Tennis
Advantage or a deciding point at 40–40. Tie-breaks, change of ends on odd games, and the 90-second rest that isn't taken after the first game of a set.
- Format
- Best of 3 or 5
- Doubles
- ITF 14 & 15
- Serve stats
- On the wrist
scrby
Score it properly.
Tennis, padel and badminton, each by its own rulebook — scored from your wrist, with your opponent following every point live on their own phone. iPhone and Android, in the same match.
Free for 14 days·Phone and watch·iPhone and Android·Works offline
Live · shared
Set 2 · ITF
Priya N.
6 3
40
You
4 2
30
Break points 3/5
Longest run 7
Avg HR 142
Three sports
Their own rules. Not tennis bent to fit.
Most scoring apps are tennis apps with the labels changed. Scorby scores each sport the way its governing body actually writes it — and the differences are not cosmetic.
FIP Padel Rules
Padel
Golden point, star point or advantage — and at a deciding point the receiving pair choose which side it is served to, which no tennis app models.
- Format
- Best of 3
- Doubles
- FIP 6 & 8
- Tie-break rest
- 20 seconds
BWF Laws of Badminton
Badminton
Rally scoring to 21, two clear at 20-all, 30 taking the game outright. The service court follows the server's own score — not the total points played.
- Format
- Best of 3 games
- Doubles
- BWF Law 11
- Interval
- At 11 · 60s
Passing the pen
Whoever's free keeps the score.
The player nearest their phone should be the one tapping — and that changes constantly. So the scoring moves, mid-match, without stopping the match to do it.
Hold to take over
A deliberate press rather than a tap — nobody takes the score by brushing their pocket.
The other phone is told
It says who has it now, becomes the mirror, and stops accepting taps. No silent handover.
The score comes with it
Every point already played carries across exactly as it stood. Nothing is replayed and nothing is lost.
Hand it back whenever
As many times as you like, in either direction, for the whole match — and whoever is not holding the pen sees every point live as it is tapped.
Why it works this way
There is only ever one pen
Two people tapping "my point" independently produces two different scores, and no merge can decide which was real. So Scorby never lets both phones score at once — one holds the pen, the other mirrors it, and the pen can move.
It means the score is never a negotiation afterwards. Whoever was holding the phone, the match on both of your devices agrees.
SET 1
0-0
9:41♥ 142
1
You serveTap: fault
›
You40
Opponent30
WonLost
Crown ↻ Undo
On the wrist
Score without breaking stride.
No shouting across the net. No drying your hands to unlock a phone. A tap between points is all it takes.
- A tap per point, and undo from the wrist — on Apple Watch, also Double Tap and the Digital Crown
- Runs as a real workout on both, so the time you play is counted
- Heart rate and calories go to your own health record — Apple Health or Health Connect
- Start on the phone or the wrist — whichever you reach for, the other catches up
- A haptic when a game is won, so you can keep your eyes on the court
ITF 29a · Changeover
90 seconds
62
Between the points
The rest is yours. Use it.
Every sport writes pauses into its rules, and Scorby knows which one you are in. The clock starts itself, and the numbers worth seeing appear while you are sitting down.
- 90-second changeovers and 120-second set breaks in tennis, counted down for you
- Padel's 20-second tie-break rest, and badminton's 60-second interval at 11
- No rest after the first game of a set — the rule most apps quietly get wrong
- Which end you are changing to, and who serves next
- In a shared match both of you see the break, and both see it end
Singles & doubles
Doubles, done properly.
Serving order and receiving order are two separate decisions in every one of these sports, and most apps ask for neither. Scorby asks for both, then holds them for the whole set.
01Youserve first
02Marc L.their pair
03Daniel R.your partner
04Priya N.their pair
Deuce-court receiver chosen per pair · both orders lock for the set
- All four players named, so the score reads as people rather than sides
- Service rotates across four games, so every player serves exactly once
- Receiving alternates by court and holds for the set, per ITF 15 and FIP 8
- Badminton's court-holding: a pair keeps its courts until it wins a rally serving
- Both orders asked again each set, because that is when the rules let them change
- Real names on the changeover screen, not "you" and "them"
Nobody left out
Three of you have it. The fourth doesn't.
That is how doubles actually turns up — someone borrowed a racket, someone is new, someone will install it later. Type their name and they are in the match: named on every screen, in the serving order, in the stats. They just don't need a phone.
Your side
YYou
IIrene
Their side
DDanielnot on the app
+Add someone without the app
01One codeEveryone who does have Scorby joins with it — their own live score, their own wrist.
02Type the restAn empty seat becomes a name. They play a full part; they just aren't holding anything.
03Pair everyone upTap two names across the net to trade places. All four screens rearrange as you do it.
04The code closesOnce the first point can be played, the code stops working. Nobody joins a match already underway.
Someone who joins for real before you start takes a typed-in seat, so a late arrival is never turned away.
Stats & history
What the match actually tells you.
Every point is stored, so the questions you think of afterwards still have answers. Each sport is kept apart — a first-serve percentage means something different when the serve is struck underarm off a bounce.
68%First-serve points won across the match
3/5Break points won, and where they fell
7Longest run of points in a row
142Average heart rate from your Watch workout
Head to head
Everyone you play, remembered
Opponents build up on their own as you score. Your record against each of them, when you last played, and how those matches went — no lists to maintain.
After the match
A summary worth keeping
Final score, time on court, calories, and the stats from the whole match — on your phone and your Watch, and on both phones after a shared one.
And the rest
The details you notice on the third match.
Not headline features — the ones that stop it being annoying.
Home screen widget
The live score on your Home Screen, and a shortcut straight back into the match.
Works with no signal
Scoring is entirely offline. Courts are usually the worst place for a connection.
Your own backup
History follows you to a new phone, held in your own iCloud or your own Google backup rather than on our servers.
Export and import
Your whole history as a JSON file, and back again on a new phone. A subscriber feature; your matches stay yours either way.
Your health record
Each match saved as a workout — Apple Health on iPhone, Health Connect on Android — with heart rate and active energy.
Undo, from anywhere
Tapped the wrong side? Undo on the phone or the watch — and on Apple Watch, with the Digital Crown.
Serve detection BETA
Your Watch can recognise a tennis serve and count them. It never touches the score.
Second-serve prompts
When the wrist sees a second serve it asks, instead of guessing on your behalf.
Golden, star or advantage
Choose how 40–40 is settled before you start — per match, per sport.
Pricing
Play first. Decide later.
Everything is unlocked for 14 days — every sport, on the phone and the watch, on iPhone and on Android. No card, and no account needed to start scoring.
One sport
€3.99/ month
or €39.99 a year
- Tennis, padel or badminton
- Singles and doubles
- Wrist scoring — Apple Watch or Wear OS
- Shared matches and full stats
All sports
€6.99/ month
or €69.99 a year
- Tennis, padel and badminton
- Any sport added later, included
- Singles and doubles
- Wrist scoring — Apple Watch or Wear OS
- Shared matches and full stats
Joining and following someone else's match is free, always — no trial, no subscription. A subscription is what starts a match, so one subscriber can get a whole group playing. Subscriptions renew automatically until cancelled; manage or cancel any time in your device's subscription settings.
Questions
Before you download.
01 Which sports does Scorby score?
Tennis, padel and badminton, in singles and doubles. Each follows its own governing body's rules — the ITF Rules of Tennis, the FIP padel rulebook and the BWF Laws of Badminton — rather than one scoring engine wearing three labels.
02 Can we swap who keeps the score mid-match?
Yes. Hold the take-over control and the scoring passes to you: the other phone is told immediately, becomes the mirror, and the score carries across exactly as it stood. Nothing is replayed and nothing is lost. Passing it back and forth needs a subscription on both sides — and whoever is not scoring still sees every point live.
03 Can my opponent see the score on their phone?
Yes. Share a six-character code or a QR and you both follow the same score, point by point — and both of you keep the finished match in your own history.
04 What if one of the four doesn't have Scorby?
Type their name into the empty seat. They are a full part of the match — named on every screen, taking their turn in the serving order, with their own serve statistics afterwards. They just aren't holding anything. Everyone who does have the app joins with the same code and gets their own live score and their own wrist. If someone turns up with it installed after you have typed them in, joining hands them their seat back.
05 Do I need a watch?
No — Scorby works on the phone alone, on iPhone and on Android. A watch adds scoring from your wrist, heart rate and a real workout, on Apple Watch and on Wear OS. Start a match on either device and the other catches up.
06 Does scoring work without a signal?
Yes, entirely. A network is only needed to share a match with another player.
07 Does Scorby handle doubles properly?
It does. Serving order, receiving order and the court-holding rules are modelled per sport — including badminton's rule that a pair keeps its courts until it wins a rally while serving, which has no equivalent in tennis.
08 Does it count my serves automatically?
On tennis, your Watch can recognise the overhead serve motion and count serves and swing speed. It is a beta feature and never affects the score. Padel and badminton serves are struck below the waist and are not detected — both are scored by tapping, which always works.
09 What happens to my matches if I change phone?
It follows you. On iPhone your history syncs through your own iCloud; on Android it rides your own Google backup. Either way it is your account's storage, not our server, so a new phone finds it waiting. You can also export everything as a JSON file at any time.
10 Can I use Scorby for a club or a tournament?
Scorby scores one match at a time, on your own devices. There is no tournament draw and no club management — it is built for the two or four people actually on court.
Your next match is the first one you'll remember properly.
Download for iPhone Android: be a tester See pricing
Free for 14 days · iPhone, Apple Watch, Android and Wear OS