I am researching providers to be able to add account sync to trackm.net I haven't done it at first because (1) they all have monthly / yearly costs and I want

I am researching providers to be able to add account sync to trackm.net I haven't done it at first because (1) they all have monthly / yearly costs and I wanted a flat fee; (2) I can't update the account without the user having logged in because of how the encryption works.