Your monthly payment has two parts - a fixed monthly rate and a per-mile rate.
You will receive a monthly reminder by email and text message, with a link to upload your updated odometer photo. After uploading, you will be charged according to the miles you rode!
Real life example:
Steve Jones has a policy with an $8 fixed monthly rate and 10c per mile rate.
If Steve rides 100 miles in a particular month, his per-mile rate will be $10 and his overall monthly payment will be $18.