TrueLean 1.0 — measuring real lean angle

TrueLean 1.0 is here. It measures how far your motorcycle actually leans — the real angle through a corner, not what a bubble level would show.

Why not a bubble level?

In a steady corner, gravity and cornering force combine to point straight down the bike's own vertical axis — which is exactly why a plain accelerometer reads near zero mid-turn. TrueLean fuses gyroscope attitude with cornering physics:

lean = atan(speed × turn-rate ÷ g)

So the number on screen is the lean you're really carrying — accurate through transitions and steady-state alike. One tap zeroes your mount, and it works at any mount angle.

What's in 1.0

• Real-time lean-angle cluster with gyro + cornering-physics fusion
• Background ride recording with lean-colored route maps and charts
• 0–60 timing, g-forces, and personal bests
• GPX/CSV export, Action Button / Siri start-stop
• Fully on-device: no accounts, no tracking

A reminder

TrueLean is a recreational tool for reviewing your rides — not a safety device, and its readings are estimates. Mount your phone securely, set up before you move, and never interact with the app while riding. Obey the law, ride within your limits, and save record-chasing for a closed course.

Ride safe out there. Shiny side up.