A discussion about the native app install banner for Android and iOS in Discourse. Falco introduced a PR to enable the feature via the native_app_install_banner site setting, requiring HTTPS. The workflow for Android and iOS is illustrated with screenshots. Falco confirmed the feature is live in Discourse 1.7 and requires opt-in. James_Higginson asked about customizing the logo, and Falco explained that the standard Discourse logo is used unless a white-labeled app is configured, with instructions for modifying the app’s metadata. James_Higginson and Bathinda found the information helpful, with Bathinda noting difficulty locating the file on their Ubuntu server.
If it gets merged, you can enable the site setting native_app_install_banner to get it working for your site. Remember that you must have the requirements from the Web App banner, like running with HTTPS.
That said, using the standard Add to HomeScreen on Android will use your custom logo everywhere, just set a good one at the Site Setting large_icon_url with 512x512 pixels.