TEKRISE — AI Tennis Swing Analysis

ONE APP · TWO WAYS IN

Built for players —
and the coaches behind them.

— FOR PLAYERS

See what you
can't see.

Most technique errors are invisible to the naked eye. TEKRISE shows you exactly what your swing is doing — and what to work on next.

Training with a coach? Practise the right things between lessons and arrive already improving.

No coach? Get clear, technical feedback on every swing and improve on your own schedule.

Track your progress across every session and every shot type.

— FOR COACHES

Your students'
homework, handled.

TEKRISE is the homework, not the teacher. It keeps your students practising what you taught — and shows you what they did between lessons.

Students arrive having grooved the right patterns — so you coach the high-value stuff.

A dashboard into every student's between-session practice.

Earn a recurring share on every student you refer.

SUPPORT THE PROJECT

Help keep
TEKRISE free.

Tennis is one of the hardest sports to master — and building a tool that genuinely helps has meant overcoming a lot of hurdles. We're not perfect yet, and we're improving it every week.

Our promise: we'll always do our best to keep TEKRISE free, so anyone can get real feedback on their game — with a coach or without one. It's built and funded by tennis enthusiasts, not a big company. A small, affordable donation is what keeps it running and sustainable.

DONATE VIA KO-FI →

NO PRESSURE · GIVE WHAT FEELS RIGHT · THE APP STAYS FREE EITHER WAY

★ TENNIS ENTHUSIASTS

— WHERE YOUR DONATION GOES

A little goes
a long way.

Keeps the app free for players who can't afford coaching

Pays the server & AI costs behind every analysis

Funds new shot types, drills and features

Keeps us independent — no investors pulling the strings

Helps us bring TEKRISE to more players, on more devices

DONATE NOW →

DONATIONS HANDLED SECURELY BY KO-FI

4-STEP PROCESS

HOW IT
WORKS

Record your swing ON YOUR PHONE

Prop up your phone or ask a friend. Any angle works — side-on gives the most data. 15–60 seconds of footage is plenty.

AI maps 47 body joints ON-DEVICE · INSTANT

MediaPipe Pose runs on-device, tracking every joint frame-by-frame. No video leaves your phone at this stage.

Gemini Vision checks your racket CLOUD · ~12 SECONDS

We extract 3–5 key frames around impact and send only those to Gemini Vision, which checks your racket face angle at the moment of contact.

You get a full coaching report 15 SECONDS TOTAL

Findings ranked by severity. Personalised drill plan. Progress tracked across every session.

ON-DEVICE

MediaPipe

47 landmarks per frame. Runs entirely on-device using Apple Vision framework.

CLOUD

Gemini Vision

Google's multimodal AI. Checks racket face angle, grip and contact point around impact.

iOS FIRST

Swift / SwiftUI

Native iOS performance. ARKit-ready for future real-time overlay features.

GDPR READY

Privacy-first

Only key frames leave the device. Full video never stored on our servers.

DONATE · NO SUBSCRIPTION, NO PRESSURE

Chip in what
feels right.

These aren't paywalls or subscriptions — just a few friendly amounts to say thanks. Any amount helps, and it all goes through Ko-fi.

Coffee

A SMALL THANK-YOU

Buy the team a coffee

Keeps us caffeinated and coding

Every little bit genuinely helps

MOST LOVED

Supporter

KEEP IT RUNNING

$15

Helps cover server & AI costs

Keeps TEKRISE free for players who need it

Our heartfelt thanks

Champion

FUEL WHAT'S NEXT

$40

Funds new features and shot types

Keeps the project independent

You're a legend — thank you

PREFER A DIFFERENT AMOUNT? KO-FI LETS YOU GIVE ANYTHING YOU LIKE — EVEN $2 HELPS.

🔒

SECURE

PAYMENTS VIA KO-FI

🎾

BY ENTHUSIASTS

AN INDEPENDENT PROJECT

💚

100% OPTIONAL

THE APP STAYS FREE

⚡

EVERY BIT HELPS

GIVE WHAT FEELS RIGHT

DEVELOPMENT ROADMAP

What we're
building & when.

SHIPPED

Q1 2026

Core AI engine

MediaPipe pose trackingGemini Vision integrationForehand analysis MVP

SHIPPED

Q2 2026

Closed alpha

On-device pose trackingRacket & ball detectionDrill recommendations

IN PROGRESS

Q3 2026

Public beta

Android open betaAll 6 shot typesProgress tracking

PLANNED

Q4 2026

v1.0 launch

App Store releaseCoach dashboardiCloud sync

PLANNED

2027+

Real-time overlay

Live on-court feedbackWeb dashboardMore sports

ON THE HORIZON

Where we'd love to take it.

Your donations help us build the next thing. Here's what's on our wishlist — no promises on dates, just where we're headed.

WISHLIST

Smartwatch app

Track movement & heart rate during play, synced with your swing analyses.

WISHLIST

Match analysis mode

Analyse a whole match — every shot scored, with patterns and weaknesses surfaced.

WISHLIST

More sports

The same swing-analysis engine, extended to other racquet sports.

WISHLIST

Pro swing library

Compare your form side-by-side with the pros, frame by frame.

OUR MISSION

We make
practice count.

106 million people play tennis, and almost all of them practise without anyone watching. Between lessons — or with no coach at all — they groove the same mistakes, because they can't see what their swing is actually doing.

We don't replace coaches — we make their work stick. TEKRISE is the feedback loop for everything that happens between lessons.

SEE

WHAT THE NAKED EYE MISSES

See it.
Fix it.

Most players plateau not because they aren't trying, but because they literally can't see what they're doing wrong. TEKRISE shows you — frame by frame.

106M

TENNIS PLAYERS GLOBALLY

6 days

BETWEEN LESSONS, PRACTISING BLIND

15s

TO A COACHING REPORT

SHOT TYPES ANALYSED

Works with your coach

TEKRISE reinforces what your coach teaches between sessions — it's the homework, not the teacher.

Honest AI

We tell you what the model can and can't do. No magic — just computer vision and physics.

Privacy-first

Your video never leaves your phone. Only 3–5 key frames are processed cloud-side.

Coach-friendly

TEKRISE is a tool, not a replacement. Coaches who use it get better outcomes.

WHO'S BEHIND TEKRISE

Made by people
who play.

TEKRISE is a small, independent project built by tennis enthusiasts — people who love the game, got tired of plateauing, and wanted honest feedback that didn't cost a fortune. We're not a big company and we don't have outside investors. That's exactly why your support matters: it keeps us independent, and it keeps the app free.

[ PLACEHOLDER — add your real story here: who you are, why you built TEKRISE, and a photo or two. People donate to people, so a genuine, personal note matters more than anything else on this page. ]

FREQUENTLY ASKED

Got questions?
We've got answers.

Will TEKRISE replace my tennis coach?

No — and it's not meant to. TEKRISE does one thing: it measures your swing and shows you what's happening. That's maybe 10–15% of what a great coach does — it can't read your opponent, run live drills, feed balls, fix your grip mid-swing, or keep you motivated. Think of it as the slow-motion replay and the measuring tape: the eye, not the coach.

I don't have a coach — is this still for me?

Absolutely. If you practise on your own, TEKRISE gives you the clear, technical feedback that's otherwise hard to get without someone watching — so you work on the right thing next instead of grooving the same mistake. Improve on your own schedule, at your own pace.

I'm a coach — how does TEKRISE help me?

It solves your biggest problem: students reinforcing bad habits in the six days between lessons. They arrive having practised the right things, so you spend less time repeating corrections and more on strategy, footwork and match play. A Coach dashboard shows what each student worked on, and you earn a share on every student you refer. See For Coaches →

Is the app really free?

Yes — the core swing analysis is free to use, and we'll always do our best to keep it that way. Running it isn't free for us (servers and AI cost money on every analysis), which is exactly why donations help. There may be optional paid extras down the line, but the feedback that helps you improve stays free.

Where does my donation go?

Straight into keeping TEKRISE alive and free: the server and AI costs behind every analysis, new features and shot types, and the time it takes to keep improving the app. We're an independent project with no outside investors — donations are what keep us going.

Do I have to donate to use the app?

Not at all. Donations are completely optional and the app stays free whether you give or not. If TEKRISE has helped your game and you'd like to chip in something affordable so we can keep it running, we'd be hugely grateful — but there's zero pressure.

What devices does it work on?

TEKRISE is built for Android first, with full on-device pose tracking. An iOS version is in the works. Pose analysis runs on your phone; only a few key frames are sent to the cloud for the racket check.

How accurate is the AI?

TEKRISE tracks your body pose frame-by-frame on-device and checks your racket using AI vision around the moment of impact. It's genuinely useful for spotting technique patterns and tracking change over time — but it's an estimate from a single phone camera, not a motion-capture lab. We're honest about that: it's a guide, not gospel, and it keeps getting better.

Is my video data private?

The full video never leaves your phone — pose analysis runs on-device. Only a few key frames around impact are sent to the cloud for the racket check, and we don't sell your data.

How do I support TEKRISE?

The easiest way is a one-off donation via Ko-fi — give whatever feels right, even a couple of dollars helps. You can also help by telling a hitting partner about the app, or sending us feedback so we can make it better. Questions? Email hello@tekrise.app.

FOR COACHES · PARTNER WITH US

TEKRISE works for
you, not against you.

A good coach gives an hour a week. The other six days, students practise blind — and quietly undo your work. TEKRISE closes that gap, and we make it worth your while.

Coach dashboard

See exactly what each student practised between lessons. Walk in already knowing what to work on.

Revenue share

Earn a recurring share on every student who subscribes through your referral. Genuine supplementary income.

Certified Coach badge

Get listed in our in-app coach directory, so TEKRISE becomes a channel that sends new students your way.

Your brand, your link

Share a coach-branded link, so students feel they're using your programme — a recommendation, not a competitor.

Run a club or coach a full roster? Let's set you up with team access and a partner deal that fits.

PARTNER WITH US →

SEE
WHAT
YOU MISS

Built for players —
and the coaches behind them.

See what you
can't see.

Your students'
homework, handled.

Help keep
TEKRISE free.

A look inside
the app.

HOW IT
WORKS

Chip in what
feels right.

What we're
building & when.

Where we'd love to take it.

We make
practice count.

Made by people
who play.

Be one of our
first supporters.

Got questions?
We've got answers.

TEKRISE works for
you, not against you.

We'd love
to hear
from you.

SEEWHATYOU MISS

Built for players —and the coaches behind them.

See what youcan't see.

Your students'homework, handled.

Help keepTEKRISE free.

A look insidethe app.

HOW ITWORKS

Chip in whatfeels right.

What we'rebuilding & when.

Where we'd love to take it.

We makepractice count.

Made by peoplewho play.

Be one of ourfirst supporters.

Got questions?We've got answers.

TEKRISE works foryou, not against you.

We'd loveto hearfrom you.

SEE
WHAT
YOU MISS

Built for players —
and the coaches behind them.

See what you
can't see.

Your students'
homework, handled.

Help keep
TEKRISE free.

A look inside
the app.

HOW IT
WORKS

Chip in what
feels right.

What we're
building & when.

We make
practice count.

Made by people
who play.

Be one of our
first supporters.

Got questions?
We've got answers.

TEKRISE works for
you, not against you.

We'd love
to hear
from you.