If you're using Windows 10, the Cortana app within Win10 will do that:
https://www.windowscentral.com/how-create-reminders-using-cortana-windows-10
In regards to the Outlook option, Yep, it costs money, but it's fairly simple to set up Tasks and add a reminder to them. A link below shows you how for the older Windows 2010 or a quick Google search gives you methods for other versions of Outlook also.
https://www.groovypost.com/howto/microsoft/automatic-task-reminders-outlook-2010/
Here's one for Outlook 365
https://support.office.com/en-us/article/set-or-remove-reminders-7a992377-ca93-4ddd-a711-851ef3597925
Hope this helps.
Grif
I've searched for apps, but most were for older Windows version and did more than I want. I want to be reminded when to pay my bills (e.g. 2 days before the Due Date), maybe birthdays as well (not essential). Does anybody know of one? Free or not, but reliable? Needs to be 64-bit.

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