The short version: your game stays on your phone, we count how many people played, and we never learn who you are.
Your streak, your points, your atlas, the airports you have found and the days you have played are stored in your own browser, on your own device. They are not copied to a server, because there is no account to attach them to. Clearing your browser data for this site erases them, and nobody, including us, can restore them.
You can move that progress to another phone yourself, with the transfer link in the atlas. It is a link you generate and send to yourself. We never see it.
Safari deletes browser storage after seven days without a visit. For a daily game whose whole point is a streak, that would quietly erase a month of play. So a single cookie, named vjfb, holds a compressed copy of your own progress and is sent back to your browser when it asks for it.
It is not a tracking cookie. It contains your game state and nothing else: no identifier, no name, no address. It is attached only to one address on this site, it is not readable by JavaScript, and no copy of it is kept on our side. There is no advertising cookie here, and no third party cookie of any kind.
To know whether the game is worth continuing, we count a small number of anonymous events: the game being opened, a flight being finished, a day being completed, a result being shared, someone coming back the day after. These are counts, not people.
The server that receives them never reads, stores or logs an IP address, sets no identifier, and builds no fingerprint. Two people who did the same thing on the same day are indistinguishable in that data, by construction. It can answer "how many finished today", and it structurally cannot answer "who".
The same applies to the daily world ranking. Your score is filed into a band of scores for the day, and your place is arithmetic on those counts. The table holds how many finished in a band, never which of them.
If you create or join a crew, two things are stored on our side for that crew: the pilot name you typed and a random number generated by your browser, plus one score line per day. That is the only place where anything of yours is kept, it exists because a leaderboard between friends cannot work otherwise, and the name is the one you chose for your friends to read. No email, no account, no IP. Deleting the crew code from your phone is how you leave.
Clear the site data for flightvjf.com in your browser settings. That removes your local progress and the cookie in one step. If you are in a crew and want your pilot name removed from it, write to us and we will delete it.
Flight VJF is a free game, offered as is, with no warranty and no guarantee of availability. The flights are drawn from real public flight data and the anecdotes are written by us; mistakes are possible, and the report link in the game is the fastest way to tell us about one. Please do not attempt to disrupt the service for other players.
Flight VJF is a small independent project, named after the initials of the three people who make it, published from France. For anything at all, including a deletion request or a question about this page: hello@flightvjf.com.