Most travel apps treat a cruise as one trip with two dates. cruiseblog knows it is a ship, a line, a route, a port for every day — and sea days in between.
Four figures, all derived from what you recorded — nothing to keep up to date by hand. „Currently at sea“ follows from the dates, so there is no switch to flip when you board and none to remember when you get off.
cruiseblog is not in the App Store yet. It is being tested through TestFlight with a small group of personal contacts. There is no public sign-up and no waiting list — if you are one of the testers, you already have the invitation.
Recording your own cruises is free, and stays free. There is no advertising, no tracking, and no analytics of any kind — the privacy policy lists every service involved, which is three.
Your cruises and photos are stored in Frankfurt, Germany. You can delete all of it yourself, from inside the app, in one step — including the account.