Hurdlr tracks your mileage via GPS, so it doesn't use odometer readings. However, you can track your January 1st odometer reading for your car each year in Hurdlr to save for your records.
To enter this, first make sure your car is added. Then follow these steps:
Tap the 3 dots in the top left corner of the mobile app or tap the gear icon in the top right corner of the web app
Select your desired car
Select the odometer year
Enter the odometer reading for Jan 1