Yeah, it’s still a personal data and still considered as such under GDPR. And you’re asking the right questions: Even if a server is located outside the EU/EEA, and if it offers services to people in those regions (e.g., by providing english or german language), GDPR compliance is required. Practical implementation is a pain :)
Derek, halt! Unga unga, no cave cuddles now. Me check bone-calendar, unga bunga, big chance for baby bump. We wait, sky spirits nod-nod. Timing everything, unga!
Sure, that was the way for woman to use a calender…