Heterogeneous user retention for various linguistic communities.

Kaplan-Meier survival curves for the main linguistic communities on Koo, showing the fraction of users who remained active after a given number of days. For each user, we define “day zero” as being their registration date on Koo. The largest linguistic communities active on Koo are shown in color (Hindi: pink, dash-dot. English: green, dashed. Portuguese: yellow, dotted. English (Nigeria): purple, solid.). Other linguistic communities are displayed in gray. The retention curve is displayed until the day that fewer than 1% of users from a linguistic community remain active.