Measure your vert.
Track your dunk.
Apex turns your iPhone into a vertical jump tester. Set your reach, jump, and watch the gap to a dunk shrink.
Three steps. Twenty seconds.
No accounts. No tutorials. Apex was designed so the first time you open it, you measure your vert before the lock screen times out.
Set your baseline.
Reach as high as you can while standing flat-footed. Apex captures your maximum overhead reach.
Aim, calibrate, jump.
Hold your iPhone steady while Apex locks onto the space around you. When it says Ready, jump.
Get your number.
The instant you land, Apex shows your jump height. Save it. Share it. Beat it.
Built for the way you actually train.
Six things that make Apex feel less like an app and more like a permanent fixture in your gym bag.
Jump. Get your number.
Skip the slow-mo footage and manual frame tapping. Apex gives you a real vertical the moment you land.
See your dunk progress.
Add your height once and Apex shows your peak reach against the rim. Watch the gap shrink, jump after jump.
Every jump tracked.
Personal bests, history, and a clean trend line. See your progress over weeks, not just today.
Train with anyone.
Multiple profiles per device: your friends, your team, your kid. No accounts, no sign-up.
Built for modern iPhone.
Runs on iOS 18 and newer, with Liquid Glass polish on iOS 26 where supported. Apex feels native because it is.
Private by design.
Your jumps stay on your device. No accounts, no tracking, no servers holding your data.
How close are you to a dunk?
Apex combines your standing reach with your best vert and plots it against a regulation 10' rim. Every time you set a new PR, the gap shrinks. It's the most addictive progress bar in basketball.
- Estimated standing reach from your height (1.33× ratio).
- Real-time updates after every saved jump.
- Share your progress card with one tap.
from a clean dunk
Frequently asked.
The short version: yes it works, no it doesn't track you, and yes it's real.
Find out how high
you can really jump.
Apex is built for iPhone. Free to try when it launches.