@feld i think it's even worse. they host on cloudflare infrastructure
currently it's for suppporters. when ready it will be a paid subscription
but they offer an open source server to self host. i think it uses mostly the same code they use. only a small javascript adapter in front of it. it's basically an API that serves an SQLite database. i'm not sure if it works for multiple users. it's end-to-end encrypted. the server does not see your data
i wouldn't let anyone read my personal notes