Three sports

Tennis. Pickleball. Platform tennis. One phone.

Same phone, same tap. The number on screen is the level of the game so far, for both players, moving point by point. Tennis reads in NTRP, Pulse or UTR; pickleball in Pulse or DUPR. Your choice, one label per sport.

Tennis, live: the level after 22 points, both players on the graph

Tennis22 points · livePulse

Pickleball, live: the level after 35 points, shown as DUPR

Pickleball35 points · liveDUPR

Platform tennis

Same phone, same tap. The court is found, the level moves, the points are cut. The paddle court is the third sport the app knows.

In the app

Capture · Connect · Improve your game

Five things come back from one recording.

Each one is one tap away when you walk off the court.

Rated.

Your level after every point, your rating placed over every game, on the scale you already know.

#URT · Your level →

Explained.

Sage, your AI coach, says what worked, what to fix and the next step. On your phone.

#UCT · Meet Sage →

Coached.

A real coach, on your clip. Send the point with a question; the reply lands on it.

#UCT · Coaching →

Shared.

Pick the point, choose the format, add your numbers, blur the opponent, post.

#UST · Sharing →

Send to: coach, family, the people you played

Connected.

Send a game to your coach, your family, or the person you played. Or a link to anyone.

The loop →

Under the hood

State-of-the-art AI, on your phone.

The ball, the players and the court are read by neural networks on the phone itself. Nothing is uploaded to be understood, nothing waits for a server.

State-of-the-art AI

Ball, players and court tracked frame by frame; the ball's flight rebuilt in 3D from one camera.

Real time, on device

The level moves while you play. Every point is cut as it ends. No upload, no waiting.

Instant session summary

Press stop and the summary is on the screen: the level, the skills behind it, Sage's next step.

Works without a signal

Record, rate and review with no internet at all. Sending and coaching pick up when you are back online.

Private by design

Video analysis runs on your phone. You choose what you send, and to whom. Delete on request.

SafePlay

Every message to a child is checked before it is delivered. The parent sees the thread.

#URT · The Universal Rating Tool

One rating. Every scale you know.

4.21± 0.25

Placed over games · placed · 14 games · tap the number

You can feel a good day. You can't prove one. Spintip reads every point while you play, builds the graph as you go, and places one rating over all your games, with its margin. Tap it and it reads on the scale you already use.

One number, any labelThere is one level. NTRP, Pulse, UTR and DUPR are labels on it, with the margin carried along. A Spintip level is a performance measure, not an official NTRP, UTR or DUPR rating.

Your level, over time

Every session places a dot. The band is your baseline. Switch the sport on the left.

Spintip sessions, Aug–Oct 2026, tennis in NTRP and pickleball in DUPR: a tennis baseline of 3.90 with a 4.36 day; pickleball from 2.60 to 4.23. Not all one player.

Doing wellYour best points are in the highlights. Watch what worked.

To improveYou hit too many balls long. Your return game was too good.

Next stepFocus on hitting deeper to keep your opponent attacking.

Spintip uses AI and can make mistakes.

#UCT · Sage, your AI coach

Every game, explained.

Tips between points. One next step after the match. A skill radar that fills in over the season, for tennis and for pickleball. Sage reads the story of every point on your phone, while you play.

In play: short cues on screen between points, hidden when the opponent faces the camera.
After the match: Doing well · To improve · Next step, in three lines you can act on.
Over time: serve, return, rally, tempo and movement for tennis; drive, attack, react, third shot, serve and kitchen for pickleball.
Video analysis runs on your phone. You choose what you send, and to whom.

HintSage never tells you why you lost. It tells you what moved the number and what to try next, and it says so when it is unsure.

Inside the app

The screens you will live in.

The live number, the session review, Sage, the dashboard, the share sheet, the send list, and a point on its way to Instagram.

Send toCoach, family, the people you played. Or a link.

Live · tennisThe level after 22 points, both players on the graph.

On the clipThe tracer, the speed, your level, Sage's tip.

DashboardEvery session against your baseline, with the skills behind it.

Sage · tennisDoing well, to improve, next step.

Live · pickleball35 points in, shown as DUPR.

Share9:16, 16:9 or a Card. Blur the other side, or a mascot.

Sage · pickleballThe pattern of the losses, the skill radar.

CourtsideOne phone behind the baseline is the whole setup.

Session ReviewThe session level against your baseline, game by game.

ExportThe point, the tip, the level, ready to post.

Send toCoach, family, the people you played. Or a link.

Live · tennisThe level after 22 points, both players on the graph.

On the clipThe tracer, the speed, your level, Sage's tip.

DashboardEvery session against your baseline, with the skills behind it.

Sage · tennisDoing well, to improve, next step.

Live · pickleball35 points in, shown as DUPR.

Share9:16, 16:9 or a Card. Blur the other side, or a mascot.

Sage · pickleballThe pattern of the losses, the skill radar.

CourtsideOne phone behind the baseline is the whole setup.

Session ReviewThe session level against your baseline, game by game.

ExportThe point, the tip, the level, ready to post.

Who it is for

Players, parents, coaches. One loop.

For players

Know your level. Keep the point.

Rated after every point. The tracer on the ball, the speed on the shot, the point worth posting ready when you walk off.

Your level →

For parents

See every match, wherever you are.

Their game reaches your phone, rated. You assign the coach, you approve, and every comment is checked before it reaches your child.

For parents →

For coaches

Teach beyond the court.

Review the points, not the hour. Pin your voice to the moment, send the summary, and the student comes back with the next game.

For coaches →

The Spintip loop

Capture once. Improve every game.

Sixty minutes on court is about ten minutes of play. Spintip hands you the ten, point by point, with your level on each and Sage's line. Review it, send it, get coached on it, and the next game starts from what actually happened.

Capture: one phone, one button, any court, behind the baseline.
Review: every point cut during the session; the summary is ready when you stop.
Connect: send a point with a question, or the whole game to the person you played.
Coach: the reply lands on the point, paid per minute. Improve: the next game is rated against the last.

Player · Coach · Parent

One game between them.

The player records and asks. The coach answers on the clip and is paid for the minutes. The parent assigns the coach, approves, and sees every match and every message. SafePlay checks what reaches a child before it is delivered.

HintTo a person on Spintip a game lands in their Reviews with a push. To anyone else it is a link that opens a page with the points. Once they open it, you are linked.

1The player sends the point, with a question.

SafePlay · Privacy

Protected, both ways.

Children, coaches, and the connection between them. Built the way a club's policy reads.

Family members: the child account under the parent

Children

A child account is always linked to a parent, who sees everything the child records and every message.
A coach cannot reach a junior until the parent assigns them.
SafePlay checks every message before it is delivered.
No sponsor marks in a child's session.

Coaches

Students come to you by your code or link. Your roster is yours.
Paid per minute at your rate, through the app. Students and parents approve before anything is charged.
Your reply stays on the clip, with your name on it.
Requests come only from players linked to you. Pause your availability any time.

The connection

Video analysis runs on your phone. You choose what you send, and to whom.
Links live seven days. Nothing is kept that you did not choose to send.
The other player is blurred on your exports, if you want them to be.
Delete your account and your data on request.

Connect · Send and receive

Send it. Link it. Stay linked.

A game, a selection, or the other side of the match you just played. Name who you played and send them their side: their points, their level, from their side. They react with one tap; you get the push.

A link looks like spintip.com/p/7KQ4M2XN Opens in Spintip · or the page

HintA package is the whole game as the receiver's app understands it, not a video file. They get your points with the tracer and the numbers, in their own Reviews.

Send to: your coach, family, the people you played, or a link

Package

The game lands in their dashboard, against their baseline

#UST · The Universal Sharing Tool

Share your best. Blur the rest.

Pick the points. Choose 9:16, 16:9, or a Card with your session level and the point-by-point curve. Put the tracer on the ball and your level and speed on each shot. Show the opponent, blur them, or cover them with the mascot. Instagram in one tap; Share reaches every other app.

TracerLevelSpeedSageCoachNotes9:1616:9CardBlurMascot

HintFree, with the Spintip mark on the clip. The other player is blurred from their own tracked box, point by point, so a friend's bad day never travels with your good one.

Two points as they leave the app, tennis and pickleball: the tracer, the speed and the level ride on the clip.

Start to finish

One whole game, in 57 seconds.

The game at the top of the page, in full: an 81-minute session, one phone on a tripod, read by Spintip while it was played. Tap to play, with sound.

Court found. The phone locks onto the lines and the clock starts with the first point. No calibration, no setup.
The level moves. After every point, for both players, on the graph. Warm-up does not count; Spintip waits for play.
Sage talks between points. One thing to fix, while it is warm. Hidden when the opponent faces the camera.
Press stop. The session review is on the screen: the level, the skills behind it, the next step.
Every point is a clip. The best one is ready to send to a coach, or to post, before you leave the court.

From the founder

"I kept hearing about matches I hadn't seen. A player remembered one thing, a parent saw another, and I wanted to understand the actual point they were talking about. Spintip is that point, with a number on it, in everyone's pocket."

Stefan Stefanov · coach, founder of Spintip

★★★★★

5.0

on the App Store, from the first four ratings. Rate it after your first game and move this number.

On the channel · @spintip

Reels, the full-game cut, courtside sketches, and the weekly call-the-level. Follow →

Ambassadors

Your community. Your Spintip.

Represent Spintip where you play, refer players, coaches and clubs, and earn on what you bring. Applications reviewed personally.

How to become an ambassador →

Clubs and academies

Every court, rated. Every member, connected.

Your crest in the app, your pros on every review, every court connected. No hardware on the court.

For clubs →

The words we use

#URTThe Universal Rating Tool: one rating, every scale you know, always with its margin.

Pulse · Level · RatingYour level on one point, for one game, and placed over all your games. NTRP, Pulse, UTR and DUPR are labels on the same level.

SageYour AI coach, on your phone. Explains every game: doing well, to improve, next step. Can make mistakes, and says so.

#UCTThe Universal Coaching Tool: Sage plus your human coach, on the point, paid for the minutes.

#USTThe Universal Sharing Tool: pick, format, numbers, blur, post. Send a game to a person or a link.

SafePlayEvery comment to a child is checked before it is delivered. The family sees the thread.

Spintip your game.