DeuceMate
The problem
“Wait… what's the score?”
Mid-match memory fails everyone. A quick swipe on your wrist tracks points, games, sets, deuce, advantage and tiebreaks automatically — so the count is never in dispute.
🎾 Now on the App Store — free, for club & recreational players
Know what to work on after every match.
Keep score with a swipe on your Apple Watch, tag how points ended, and get coaching drawn from the points you actually played. Want to go deeper? Hand the whole match to ChatGPT, Claude or Gemini in one tap.
Free forever · No ads · No tracking · iOS 17+ & watchOS 9+
New to Apple Watch apps? Follow the step-by-step setup guide, with a picture for every tap.
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Swipe to keep score Points, games, sets and serve, on your wrist.
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Tag how it ended Two quick taps. Skip it when you just want the score.
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See what to fix “6 double faults, including 1 on break point — practise your second-serve routine under pressure.”
Apple Watch + iPhone
Singles & doubles
20+ match stats
One-tap AI coaching
Unlimited match history
No download, no sign-up
Try it right here
Open the coaching report from a sample match, or score some points on the Watch. It all runs in your browser, with fictional data.
Sound familiar?
Three headaches every club player knows
DeuceMate was built for the realities of weekend tennis — not the pro tour.
The problem
“Who's serving? Which end?”
Server rotation, doubles service order, side-change reminders and a court-end compass are handled for you — no more pausing the match to work out the logistics.
The problem
“What should I actually work on?”
Guesswork ends here. Every match becomes 20+ stats, plain-language coaching insights, and a prompt you can hand to ChatGPT, Claude or Gemini for honest, specific feedback.
Built for real matches
Serious depth, zero fuss
Whatever format your club throws at you, DeuceMate already knows the rules.
Six match formats
Best-of-3, full final set, super tiebreak, quick four, and perpetual modes for practice.
Singles & doubles
Full four-player service rotation in doubles, tracked automatically every game.
Undo anything
Roll back to any point with the complete game state restored — score, server and all.
Court compass
“Check Changeover” reads the watch compass to show which end to take. No GPS.
Live announcements
Your iPhone calls the score out loud, umpire-style, while the app is open courtside.
Heart-rate insights
Optional HealthKit workout adds live HR, calories, distance and win-rate by HR zone.
Ends-switch reminder
After a set the “change ends” notice stays on the scoreboard until the next point — no more undoing a point to re-read it.
On your iPhone
Relive every match in detail
Every match lands on your iPhone with a full stats breakdown, a point-by-point momentum timeline, and coaching you can act on.
On iPhone
The match, broken down side by side
A clear you-vs-opponent breakdown of where the match was really won and lost.
- Serve & return — 1st/2nd serve in & win %, return win %, double faults.
- Winners & errors — winners, unforced and forced errors, and your W:UE ratio.
- Break & pressure points — conversion, save rate, and how you hold up on the big points.
- Per match and per set — filter every stat to spot exactly where momentum turned.
On iPhone
See every momentum swing
An interactive timeline plots every point, with optional heart-rate and step overlays so you can feel the match again.
- Set bands & outcome markers — spot runs, collapses and turning points at a glance.
- Filter to points won or lost — see where you took control, and where it slipped away.
- Point outcomes & rally depth — winners, unforced & forced errors and double faults, plus how each point ends (serve, return, serve+1 or rally).
- Heart-rate & steps overlays — correlate your effort with the scoreboard (optional).
💡 The deeper outcome & rally-depth analysis switches on with Track Point Outcome — just 2 extra taps per point, and a wealth of performance insight is unleashed.
On iPhone · PulseCoach
Winning points — or just working harder?
PulseCoach overlays your Apple Watch heart rate on the match and shows how your points are won relative to physical exertion — so you can tell controlled tennis from sheer effort, and see where your game could be more efficient.
- Win % by heart-rate zone — how often you take the point when you're composed versus when your heart is pounding.
- Effort vs. reward — spot the points you only win by grinding, where a smarter pattern would close them out cheaply.
- Where fatigue bites — find the zones and stretches where tiredness starts costing you points.
On iPhone · Trends
Is the work paying off?
Pick a focus after one match, then watch it across the next ones. Trends shows whether your errors and serve are really moving, or whether it was just one good day.
- Last 5, 10 or 20 — or every match you have saved.
- Like for like — singles or doubles, format, match type or opponent.
- Errors, serve & return — see each one as a rate or a count.
✨ The DeuceMate difference
An AI coach in your pocket — on every match
One tap turns your match into a coaching brief for ChatGPT, Claude or Gemini — honest, specific, and available the second you walk off court.
More inspiration than the coach you pay for
DeuceMate writes a prompt scoped to your level (beginner, intermediate or club) and packs in every stat and the full point-by-point record — patterns a courtside memory simply can't hold.
01
Biggest weakness
The single most costly problem, pulled straight from the numbers.
02
Hidden strength
One thing going well — cited with the stat that proves it.
03
Two tactical tweaks
Practical in-match adjustments you can make next time out.
04
One drill
A single targeted drill — doable on a public court, no coach required.
Opens in
ChatGPT
Claude
Gemini
…or any app via Share
📤 Share the whole match
Send anyone an interactive match report
One tap turns your match into a single self-contained web page — momentum chart, full stats, point-by-point, even the AI-coach launcher — that opens in any browser. No app, no account, no link to expire.
Interactive momentum chart
Cumulative points with set bands and toggleable outcome & ending-shot markers — Points Won, Points Lost and more, each with a count.
Every stat, side by side
The same you-vs-opponent breakdown as the app, with Stats / Points tabs and per-set filters.
AI coach built in
Copy the coaching prompt or jump straight into ChatGPT, Claude, Gemini and more — right from the page.
Opens anywhere, offline
A plain HTML file that works on any phone, tablet or computer — no install, no network.
Private by default
Nothing is uploaded. The page loads nothing from the network; you choose who to send the file to.
Perfect for opponents
Share a full, explorable report with someone who's never heard of DeuceMate.
🎨 A bit of fun
Dress the app for your court
Five court-inspired themes, so the app feels right at home wherever you're playing — from red clay to a floodlit night match. Pick one; it syncs across your Watch and iPhone.
ClassicThe original green
ClayRed-dirt clay
GrassSummer grass
Hard CourtHard-court blue
Hard Court NightUnder the floodlights
Privacy first, always
Your matches stay yours
No account. No analytics. No developer-controlled backend. Your matches are stored on your Apple devices and, when available, in your personal iCloud Drive.
No developer data collection
Core works offline
On-device sync
Your own iCloud archive
Free forever
No ads
No account
Watch ↔ iPhone sync uses Apple's WatchConnectivity (peer-to-peer, no cloud). The automatic iCloud Drive archive excludes HealthKit measurements; outside that archive, data leaves DeuceMate only through an export or AI hand-off you initiate. Compass data stays on-device. Read the full privacy policy.
Good to know
Frequently asked questions
Is DeuceMate really free?
Yes — completely free for unlimited match tracking. No subscriptions, no in-app purchases, no ads, ever.
What do I need to use it?
An iPhone on iOS 17 or later and an Apple Watch on watchOS 9 or later (Series 4 or newer, SE, or any Ultra). You score on the watch; the iPhone is your live viewer and archive.
Does it work for doubles and padel?
Yes to both. Doubles includes full four-player service rotation. Padel shares tennis's game/set scoring, so DeuceMate keeps score for it too (some tennis-specific tips won't all apply).
Do I need the AI coaching feature to use the app?
Not at all. Scoring, live viewing and stats work on their own. The AI Coach is an optional one-tap export — you choose to hand your own match data to ChatGPT, Claude, Gemini or any app via Share.
Is my data sent to a server?
Not to the developer: DeuceMate has no developer-controlled server and the developer collects no data. Watch ↔ iPhone sync is on-device peer-to-peer. When available, an automatic archive with HealthKit measurements removed is stored in your personal iCloud Drive for fresh-install restore. Data may also go to a recipient or service you explicitly choose through export, sharing, or an AI hand-off.
How do the spoken announcements work?
When enabled, your iPhone speaks the score umpire-style while the app is open on screen courtside, through the phone speaker or a Bluetooth speaker. They pause if the phone is locked or the app is backgrounded.
More questions? Visit the full support page.
✅ Available now on the App Store
Walk on court with a clear head.
DeuceMate is an iPhone app with a bundled Apple Watch app. Free forever, no ads, no tracking — just the score, the stats, and a coach in your pocket.
Free on the App Store · iOS 17+ · watchOS 9+ · Apple Watch Series 4 or later, SE, or Ultra