There’s a dedicated API now… https://developers.google.com/web/fundamentals/app-install-banners/#native_app_install_banners https://developers.google.com/web/f

There’s a dedicated API now… https://developers.google.com/web/fundamentals/app-install-banners/#native_app_install_banners https://developers.google.com/web/fundamentals/app-install-b... It uses some heuristics: > Be visited by the user twice, over two separate days during the course of two weeks. I think apps installed this way should be also limited to some subset of permissions they can request[1]. Otherwise this is almost like a bookmarking mechanism. [1] They could still explicitly ask for more, on use.