Pushkeen is a library of real push notifications collected from popular apps — Duolingo, LinkedIn, Twitch, and dozens of others — organized by app so you can see how each one handles re-engagement messaging.
Push notification copy and timing rarely get documented anywhere; seeing 80+ apps' actual notification patterns side by side is otherwise nearly impossible to research systematically.
Useful for product designers, growth marketers, and copywriters working on retention and re-engagement flows specifically — a narrow use case outside of that.
It's a small, single-maintainer passion project (funded by a "buy me a coffee" link, not a company), so coverage depends entirely on what apps the creator happens to track.
Curated collection of push notification patterns from mobile apps.
