AXL wireframe chassis with toe and camber lines

Wheel alignment without the rack.

Press your iPhone flush to the rim. AXL reads toe and camber with its motion sensors — accurate to about 0.1°.

In the driveway

Check toe & camber at home.

No alignment rack, no strings, no shop appointment. Just you, your car, and your phone. Make an adjustment, measure again, and see if you're in range.

Measuring toe with an iPhone pressed to the wheel

Everything your alignment shop sees.

Toe

Per-wheel and total toe, relative to the rear thrust line.

Camber

Read camber on every corner with the phone flush to the rim.

Thrust line

See where the rear axle is actually pointing the car.

Chassis centerline

Measure each wheel against the car, not just the other wheel.

Body roll

Level the car out before you trust a reading.

Save, compare, average

Keep every test per vehicle and compare before and after.

See all features →

How it works

  1. 1

    Use your iPhone in a flat case

    No special gear needed — just your iPhone in a flat phone case. Optional: print the free AXL X-tender for extra reach and stability.

  2. 2

    Press flush, hold still

    Screen to the sky, press the power-button (or volume) edge flat against the rim lip. A guided pitch rail and haptic feedback tell you when you're steady — tap Capture.

  3. 3

    Read your numbers

    Toe, camber and thrust angle for every wheel, measured with your iPhone's motion sensors.

AXL results screen

Download X-tender.

The AXL X-tender is free to 3D print for supported iPhones. Pick your model and download the .stl.