Native Android client for Sheaf, the open-source plural system tracker. Features Members, groups, tags, custom fields with the same privacy model as the backend. Front tracking with switch entry, cofronters, custom fronts, and an infinite-scroll history view. Member bio history with per-revision diff view. Journals (read/write). System Safety settings, including the grace-period and auth-tier controls. Home-screen widget (Glance) showing current fronters. Self-hosting first. Point the app at any Sheaf API base URL via Settings; the URL is dynamic and takes effect on the next request without a restart. 2FA / TOTP supported on login.