Living abroad? I built DueNest for dates you have already checked

I am building DueNest at Colworks for a small, easily overlooked task: remembering an important date after you have already checked it.

If you live, study, or work abroad, you can enter a passport-validity, program-end, or other confirmed date, choose a timezone and reminder intervals, and review the schedule. There are no passport scans or document uploads. DueNest does not determine immigration status or calculate legal deadlines.

The free beta works in phone and desktop browsers. The site now includes a passport-date example and a quick-start FAQ:
https://colworks.com/duenest/?ut...

I would value a small first-use test: try creating one reminder and tell me which step was unclear. Please do not post document details, private dates, or sign-in links. Keep a separate reminder for critical dates; email inbox placement is not guaranteed.

For people already using a calendar: what would a separate reminder tool need to do better to earn a place in your workflow?