NOW IN BETA · FOR 3.0–4.5 PLAYERS

An AI coach
that watches
every ball.

Set your phone on a tripod. Hit 10 balls. We count what landed, what missed, and tell you the moment you're ready for the next level.

MK JR AS
2,400+ players in beta
No wearables — just your phone & a tripod
9:41
SATURDAY · 9:41 AM
Morning, Alex
A
12-day streak NEXT: SUN
TODAY · FOREHAND
LEVEL 3.5
Cross-court depth
Land 7 of 10 in the deuce corner
15 min
30 balls
FH · PAST SERVICE LINE
+51 since week 1 ↑
73%
WK 1
GOAL 70% · NOW
UP NEXT
2 LOCKED
01
Backhand slice depth
LEVEL 4 · LOCKED
02
Kick serve placement
LEVEL 5 · LOCKED
8
Cross-court FH · 8/10
YESTERDAY · 22 MIN
Today
Drills
Progress
You
Counts every ball
73% past the line ↑
The problem

You hit a hundred balls.
Did any of them go where you wanted?

Without a coach, practice is just "hit until tired." You can't see your own contact point, you can't tell if your cross-courts land deep or short, and you've no idea whether you're improving or just logging hours.

We built the coach you can't afford to keep on speed-dial.

WITHOUT THE LAB · 10 BALLS 3 / 10 IN
Landed in target (3) ✕ Missed (7)
"felt great today" — your only data point
How it works

Four steps. No coach required.

STEP 01/ 04
Pick a drill.
Cross-court FH
Kick serve
Slice approach
Cross-court depth, kick-serve placement, slice approach. Each has one clear goal: land 7 of 10 inside this zone.
STEP 02/ 04
Set the tripod.
Stand your phone at eye level behind the baseline and hit record. No wearable, no second person.
STEP 03/ 04
Hit. We count.
7/10
LAST 10 BALLS
The camera watches where every ball lands — depth, height over the net, in or out. One ball at a time.
STEP 04/ 04
Pass or stay.
PASSED
L3 → L4 UNLOCKED
Meet the conditions, unlock the next level. Miss them, and you run it back until you clear it.
SESSION RESULT · FOREHAND
Cross-court depth · L3
PASS
73%
Past the service line
+51 since week 1
7 / 10 in target70%
Avg depth ≥ deuceOK
Net clearance ok0.9m
What the lab sees

Outcomes.
Not opinions.

We don't grade your form — plenty of people hit weird forehands and still beat you. We measure what matters: where the ball landed, how it got there, and whether you can do it again.

In-court %
Every ball that lands fair counts. Shanks and longs don't.
Depth & placement
Past the service line? In the corner? We map every landing.
Net clearance
Too low you tape it, too high you float. We measure both.
Pattern recognition
Misses skewing left? Short on the third ball? We spot it.
Not on the list: hip rotation, contact point, follow-through, footwork. Coaches teach technique. We measure if it worked.
Track everything

Every session saved.
So you can see if last week was a fluke.

Every ball, every drill, every pass and every stay. Browse the calendar, replay any session, watch the line go up.

LAST 5 WEEKS
Practice calendar
12-day streak
LESS MORE 23 SESSIONS · 614 BALLS
FOREHAND · PAST LINE %
The line goes up.
73%
+51 ↑
"first time I could prove the work was working."
RECENT SESSIONS
Every drill, replayable.
SEE ALL 23 ›
TODAYFH
Cross-court depth · L3
73% past line
PASSEDREPLAY ›
MONFH
Cross-court depth · L3
68% past line
STAY · RETRYREPLAY ›
SUNBH
Just land it · L1
9 / 10 in court
PASSEDREPLAY ›
FRIFH
Land it deep · L2
6 / 10 past line
PASSEDREPLAY ›
WEDFH
Cross-court depth · L3
54% past line
STAY · RETRYREPLAY ›
The lab

A skill tree for your forehand.

We start with "just land it" and build outward. Each level has a measurable condition — clear it, and the next one opens. No level numbers floating in the air; every step is a real shot you'll need on Saturday.

Forehand · 18 levels · live
Backhand · 14 levels · live
Serve · 14 levels · soon
Volley · 10 levels · soon
FOREHAND · LEVELS 1–6
Your progress
6 WK IN
Just land it
6 of 10 in court
✓ CLEARED
Land it deep
5 of 10 past service line
✓ CLEARED
L3
Cross-court depth
7 of 10 in the deuce corner
WORKING ON IT
Pattern: 3-deep, 1-short
String 4 in a row
Inside-out forehand
5 of 10 from the ad side
Change of direction
60% cross + 40% line
Who it's for

Built for the 3.0 to 4.5 who wants to improve.

You can rally. You can serve. You want to stop guessing whether you're getting better.

YES · THIS IS YOU
  • Plays 2–4 times a week
  • Has hit a ball machine alone, more than once
  • Can rally cross-court 10 in a row
  • Knows their forehand needs more depth
  • Wants drills with a number at the end
NOT YET · WE'LL BE HERE
  • ✕Still learning consistent contact
  • ✕Wants form correction (we don't do that)
  • ✕Plays only doubles, for the social
  • ✕Already has a coach 3×/week
  • ✕Is a 5.0+ — our drills will bore you
From the courts

What early users say.

I thought my cross-courts were going deep. The lab told me 6 of 10 landed short of the service line. Fixed it in three sessions.
MK
Maria K.
4.0 · Charlotte, NC
First thing I've used that doesn't try to coach my form. Just tells me where the ball went. Honest.
JR
Jay R.
3.5 · Austin, TX
Passing L3 felt like beating a video game. I texted my hitting partner immediately.
AS
Amelia S.
4.5 · New York
Limited seats available

Become a founding member.

Help shape the experience from day one. Here's everything you get the moment you join.

ONLY 100 SEATS 23 left this morning
FOUNDING MEMBER LIFETIME PRICE LOCK
$300/ year
Regular price $600 / year
  • Early access to the beta — first group in
  • Early access to future features as we ship them
  • Founding price locked for life, even as regular pricing climbs
  • Custom drills for the stroke of your choice, updated as you progress
  • Private Discord with the team and other founding members
  • Full refund within 60 days, any reason, no questions
60-DAY REFUND · NO QUESTIONS ASKED
FAQ

Questions we get on court.

Don't see yours? Message us — we read everything.

01What kind of phone do I need?+
iPhone 11 or newer, or any Android from 2021+. A single rear camera and 64GB free for session video. That's it.
02Do I need a tripod?+
Yes — any phone tripod works. Set it at hip height behind your baseline, camera at the court. We calibrate the lines in 4 seconds. A $25 tripod is plenty.
03Does it track form / technique?+
No — on purpose. Plenty of pros hit ugly. We measure outcomes: in-court, depth, height, placement. For form coaching, a good coach is still your best bet.
04Will it work indoors / on clay / under lights?+
Yes to all three. Tested on hard, clay, indoor, and outdoor under lights. Heavy rain and fog confuse the camera — best to sit those out.
05Which strokes are supported?+
Forehand and backhand are live. Serve drops next, volley after that. Groundstroke patterns and serve+1 are in the works.
06Can I use it with my coach?+
Yes — share your session footage and scores with them. We don't replace coaches; we replace the ball-counting clipboard.

Hit better.
Every day.

Download the lab. Prop your phone. Let's see what your forehand is actually doing.

Download on the
App Store
Get it on
Google Play
Free to start · works on every court · cancel anytime