# N-Day LTV in Retention (Custom Revenue + Change Over Time) Source: https://amplitude.com/en-us/releases/n-day-ltv-in-retention-custom-revenue-change-over-time --- AnalyticsFeb 20, 2026 [\[All updates\]](/releases) ### N-Day LTV in Retention (Custom Revenue + Change Over Time) Ilankir Matungulu **What it is:** N-Day LTV brings cumulative revenue measurement to Retention Analysis, so you can track how much value a cohort generates across fixed day windows: Day 1, Day 7, Day 14, Day 30. To use it, set a start event, pick a revenue return event, and toggle N-Day LTV under the Return Event controls. The chart breaks down revenue by day window, with options for all users or paying users only, period comparison, and 24-hour or calendar-day windows. Before this, teams that needed LTV analysis had to export data and build charts in external tools, pulling analysts out of Amplitude and requiring manual upkeep. **Where:** Retention Analysis > Return Event controls > N-Day LTV toggle **EUDC:** Yes **When:** Available now on all plans. **Docs:**