Parking fine v.s. parking reminder? (advise wanted)

Guys,

I got a ticket for overtime parking last week and this is not the first time! Sometimes simply because I forget to get back and remove my car in good time. My friend suggests parking reminder, e.g. can download an APP into mobilephone. I tried one, but I also have to remember to set an alarm after parking.... but my problem is remembering! Sad

Have you tried such reminder? or do you have better way/idea?

Thanks in advance for any comments.

BR, Jakob