MADXtreamSports (MADXS)

One phone. One live trace. Watch from any computer.

MADXtreamSports (acronym MADXS — MAD is Motion Active Data) is an Android app. Record skate or boxing on a single phone, get a UIS score (0–1000), follow friends, and stream the 3D path so anyone can watch in a browser as a guest — no account needed.

Download the app Try as guest Report an issue Contact

Android. Opens MADXtreamSports.apk from GitHub. Allow install from this browser if asked.

Try as guest

Enter the 5-character code (or session ID) shown in the app. No sign-in.

Instagram

Follow @madxtreamsports for clips and updates.

Scan the QR to open Instagram.

The app

Record on Android

Carry one Android phone. Sign in, pick skate or boxing, press start. Motion and GPS stream live. When you stop, you get a UIS score from 0 to 1000. Follow friends in the app (QR or email) and jump into a session they are recording.

Download the app

Score

UIS

Universal Impact Score, 0–1000. See the formula below — same math the phone runs when a session ends.

How UIS is calculated

Social

Follow friends

Link accounts with a QR code or an email request. When a friend is live, you can join their session from the app without typing a code.

Rollerblade

Skate Tracer

3D route as a ribbon, G-force, rotation, distance and speed. Open from a code or the skate viewer.

Skate viewer

Boxing

Boxing Tracer

Fist arcs, round clock, ghost overlay of the previous round. Same code, boxing viewer.

Boxing viewer

Support

Report an issue

Found a bug in the app or on this site? Open GitHub Issues for MADXtreamSports. Click an issue to go to GitHub.

Report an issue

How it works

1 — Record

Install MADXtreamSports (MADXS — MAD is Motion Active Data) on one Android phone. Choose rollerblade or boxing, then start.

2 — Share

The app shows a QR and a short code. Send the code to anyone — they do not need an account.

3 — Watch

Paste the code above. This site opens the matching live viewer for that sport.

4 — Friends and score

Follow friends in the app. Each session ends with a UIS score (0–1000) saved to your account.

How UIS is calculated

When you stop recording, the app keeps the session’s peak accelerometer magnitude A (m/s²) and peak gyroscope magnitude ω (rad/s). UIS is:

raw = w_a·A + w_g·ω
UIS = clamp( round( raw / max × 1000 ), 0, 1000 )

Sport	w_a (accel)	w_g (gyro)	max
Boxing	0.65	0.35	200
Rollerblade	0.45	0.55	100

Example: boxing with A = 100 and ω = 100 → raw = 100 → UIS = 500. Skate with the same peaks → UIS = 1000.

MADXS is the acronym for MADXtreamSports. MAD means Motion Active Data.