AO3 Reader — Daily KPIs

“Active” = real sessions (session_start / engagement) — push-inflated activity is excluded by construction. Gaps in lines are missing BigQuery export days (Jul 25–28 unrecoverable), not zeros. Chapter-break and search metrics exist from Aug 9 (iOS) and reach Android as 1.6.55 rolls out. The newest cohort day's D1 is provisional until the following day completes.