Use a systemd timer to send yourself a reminder. Discoverd them recently myself and honestly liking them more than cron.

I mean depending on the country you almost certainly learnt to drive in a roundabout (quadrupley so if you were learning in Milton Keynes)

Unfortunately most (bigger) services that require a phone number will almost certainly want to validate the phone number so you will need to receive a text or phone call.

Don’t think it got sold off but Apache got it, it’s since been discontinued again after not much work.

https://incubator.apache.org/projects/wave.html