Manually link an iOS app to a login

@beijder

Why isn't it possible for 1Password to create a sort of a link between the app and a login entry?

Apps on iOS are sandboxed and work "inside of their rectangle". The interaction between iOS apps, such as the interaction between a password manager and another app, is deliberately limited by Apple for security and privacy reasons.

It's important to remember that iOS is more locked down than other systems such as macOS.

1Password code is not involved in detecting apps and filling logins inside of those apps, all of that is handled by iOS itself using a feature called Password AutoFill. Password AutoFill takes the associated domain of an app, provides it to 1Password, and then 1Password finds the appropriate login item and sends the right username and password back to Password AutoFill so that iOS can fill the login credentials into the app that you're using.

If an app developer is unwilling to publish an associated domain for their app then the only other option is to copy and paste your password from 1Password into that app: Copy and fill passwords into apps that don't work with 1Password

-Dave