Winline

Ever wondered exactly how a free kick bends over the wall and dips into the top
corner? Winline is a free-kick and penalty physics sandbox that lets you set
up a dead-ball strike, launch it, and watch a real trajectory unfold — Magnus
curve, air drag and gravity, all simulated from the actual equations of flight.
It is built for football fans, coaches and physics-curious tinkerers who want to
understand the arc, not just admire it.

Open the Lab and dial in every part of the strike: distance, power, launch angle,
aim, spin axis and spin rate, the number of players in the wall and where they
stand, a keeper on the line, even wind speed and direction. Tap Shoot and the ball
flies exactly the way the physics says it should — curling around the wall, dipping
under the bar, or sailing wide. Replay each shot from a cinematic follow-cam, a
clean side elevation, or a top-down helicopter view, and read the hang time, curve
distance and peak height of every attempt.

KEY FEATURES
✓ Real ball flight — a Magnus-effect + drag simulation, not a canned animation
✓ Full control — power, elevation, aim, spin axis and rate, wall, keeper and wind
✓ Four camera angles — cinematic, side, top-down and helicopter replays
✓ Drills — five career tiers plus a fresh daily challenge and a streak to keep
✓ Replays — stylised recreations of classic dead-ball strikes to load and study
✓ Profile — shots, goal rate, hang time, a scoring heatmap and your spin signature
✓ Sandbox — name, save, reload and share your best strikes
✓ Whiteboard & Glossary — short, plain-language notes on the physics and technique

HOW IT WORKS
1. Open the Lab and shape your strike with the sliders and pickers.
2. Tap Shoot and watch the trajectory curve toward goal.
3. Replay it from any angle, then tweak a setting and shoot again.
4. Clear drills, chase your daily streak, and track your stats in Profile.

WHY Winline — it is a genuine simulation, not a highlight reel. The same
engine drives the Lab, the drills, the replays and the learning cards, so every
number you see comes from the ball actually flying. It works fully offline, asks
for no account, shows no ads and sells nothing.

PRIVACY / DATA — Winline runs entirely on your device. It has no account, no
network calls, no tracking and no ads. Your progress, saved strikes and stats
never leave your phone.