Anything that describes a trip works — an email from a friend, a blog post, a list of places, a plan an AI wrote for you. You'll see which stops WHRNXT recognised before anything is saved, and can pin the ones it didn't.
That includes a trip somebody shared from another app or site, as long as the page is public: open it, select the itinerary, and paste it in here. Paste the words rather than the address — WHRNXT reads what you give it and never goes off to visit the page, so a link on its own has nothing in it to read.
Nothing is stored against you — no account, no login. The trip becomes a link you keep.
Open it in WHRNXT, or copy the link and keep it. It works on any phone.
Search for it, or tap the map to drop a pin. Drag the pin to fine-tune.