No equipment
Your camera replaces the jump mat, wall marks, and tape measure.
Your phone. Your jump. Your number.
TrueVert
Measure your vertical with your phone.
Prop it up, jump, and get your height. No jump mat, measuring stick, or second person needed.
Free to measure · Private by design New personal best
27.4in
0.42 s in the air
Takeoff speed4.1 m/s
Dip depth15.2 in
Illustrative result
One clean workflow
Prop. Jump. Know.
TrueVert handles the setup, timing, and calculation so you can focus on the jump.
- 01
Set your phone down
Place it 2–4 metres away with your whole body in frame. Front camera works solo.
- 02
Wait for the tone
TrueVert sees when you are framed and still, then starts the countdown automatically.
- 03
Get your number
Your height is calculated from airtime and saved when the measurement checks agree.
One measurement. One number.
Know what left the floor.
TrueVert finds takeoff and landing frame by frame, then turns time in the air into jump height. When a clip looks unclear, it says so instead of presenting a shaky result.
- Automatic confidence checks
- Plain-English retry guidance
- Manual frame adjustment when you want it
30 in
20 in
10 in
New personal best
27.4in
0.42 s in the air
Takeoff speed4.1 m/s
Dip depth15.2 in
Built for athletes, not labs
Everything you need. Nothing in the way.
Solo by default
Auto-framing and audio cues let you test without a spotter touching the phone.
Progress, remembered
Keep your jump history, replay clips, and see when a new personal best lands.
Private on-device
No account, ads, analytics, or cloud upload. Your videos stay on your phone.
Jumpsin / cm
30-day best27.4 in Trending up
Today · 6:42 PM27.4 inPersonal best
Jul 7 · 5:10 PM26.8 in Replay
Jul 2 · 7:31 AM26.2 in Replay
Train against yourself
Every jump has a next one.
Build a simple history, keep the video behind each result, and spot your personal best without turning training into a spreadsheet.
FreeEvery measurement, always
LocalVideos and results stay on-device
Physics, not guesswork
Time up tells you height.
The app measures how long you are airborne and applies the same flight-time principle used by professional jump-testing systems. Precise timestamps matter more than a ruler in the background.
heightg × t²8t = total time in the air
Your next number is waiting
Point. Jump. Done.
Measure free with the phone already in your pocket.