Retention · day-by-day cohorts
Rows are install cohorts; column N is the share of that cohort active again N days after install. Two sources, one grid: Apple's opt-in measurement, and our own instrumentation covering every device.
Two different counters: Apple's figures come from Apple's own device-level measurement (opt-in devices only). Ours come from our in-app event analytics, covering every device. The two systems count differently, so absolute levels differ between the tabs — compare the shape within each grid, not numbers across sources. All “Ours” views cover iOS app devices only.