What signing in does, and does not
It adds people, and a second screen. Your reading syncs between your devices, and you can see what the people you know have been reading.
It does not unlock your own library, because nothing was ever locked. Fallow Reader is a complete reading app with no account at all — saving, reading, marks, books, export, every accessibility feature. If you sign out, or delete the account, or we disappear, your reading is still on your phone.
And your profile starts private. Nobody is opted into a shelf they did not know was a performance. What you read becomes visible when you say so, and even then it publishes from that day forward rather than reaching back through everything you have ever read.
What we hold
An account is an id, a date, an email address for the code, and a username if you choose one. Not your name, not your location, nothing about your device beyond which kind it is — and no analytics anywhere, because there is nothing in either app that measures you.
The privacy page says the uncomfortable half plainly too: an account holder's reading sits on our server in a form we could open. We would rather say so than imply otherwise.
A preview. This page is drawn, not wired — the code box does nothing yet. The account layer it needs already exists and runs the phone app; connecting them is the next piece of work.