You’ll want to view this from the perspective of: How do I open my iOS/Android app from a URL, ie. App Deep Linking.
They each have their own respective implementations:
- android/app-links
- apple/allowing_apps_and_websites_to_link_to_your_content
Or you can go with more comprehensive SDKs that are capable of doing both for you:
- Firebase Dynamic Links
- Branch.io Deep Linking