In-App Event

Summer Smash
2026

Master your serve with real-time AI form analysis, ball speed & trajectory tracking.

📅 July 15 — Aug 31, 2026 · Compete with players worldwide

Download SpeedTennis & Join → How to join
Why SpeedTennis

Real-time AI, on device.

No subscriptions, no cloud, no compromise on privacy. All analysis runs locally on your iPhone.

⚡

Ball Speed Tracking

Real-time ball speed measurement using court-width calibration and trajectory tracking.

🎯

AI Form Analysis

Detects players, rackets and the ball — draws trajectory and shows speed labels on screen.

🔒

100% Offline & Private

No subs, no cloud uploads. Every frame stays on your device.

The Challenge

How fast can you serve?

Pro serve average is around 180 km/h. What's your personal best?

180km/h
Pro serve reference speed
SpeedTennis computes ball speed locally on iPhone using court calibration and trajectory tracking.
How to Join

Three steps to your top speed

No sign-up. Just record your shots with SpeedTennis and AI measures the rest.

1

Download & open SpeedTennis

Install on iPhone, open the Live tab, and grant camera access.

2

Record your serve

AI detects players, racket and ball in real time, drawing trajectory and showing speed on screen.

3

Share your top speed

Post a screenshot with #SpeedTennisSummer to enter the global leaderboard.

Rewards

Leaderboard prizes

Ranked by the highest speed shared under the hashtag when the event ends.

#1
Champion · Speed King
Limited SpeedTennis merch + Champion certificate
#2
Runner-up
Limited SpeedTennis merch
#3
Third place
Limited SpeedTennis merch
★
Participation
All valid entries receive an event digital badge

Rules

  • Recordings must be made with SpeedTennis, with speed shown on screen by the app.
  • Screenshots must clearly show the speed value and trajectory.
  • Each player's highest single result counts toward the leaderboard.
  • SpeedTennis reserves the right to disqualify fraudulent entries.