A purpose-built calculator for the string method. Enter your rim measurements and read true toe, camber and thrust angle — referenced to the chassis centreline — in millimetres, inches or degrees. Built for the phone in your toolbox.
Enter the distances you measure at the rim and the app does the geometry — no charts, no mental arithmetic at the car.
Per-wheel toe and the rear thrust angle relative to the chassis centreline, so you can see crabbing the front-and-rear-aligned numbers would hide.
Enter measurements in millimetres or inches; read toe in mm, inches or degrees. Switch any time — the maths stays exact underneath.
Capture a baseline, make your changes, and compare the two side by side without losing the original readings.
Generate a clean, shareable alignment report for the car's file or the customer — in whichever units you're working in.
Save each alignment by name and reopen it later. Everything is stored on your phone — no account, no sign-in.
No internet needed. The whole app runs on the device, so it works in the garage, the paddock or the trailer.
String Align Pro is published by RaceTracs Ltd. It takes the proven string-box method and removes the error-prone arithmetic, so the numbers you act on are the numbers you measured — referenced properly to the car's centreline.
Questions or feedback? See Support or email stringalignpro.support@racetracs.com.