How to make WatchOS app users aware that there's an iPhone Companion app too?

Hi everyone,

When we launched our WatchOS app and the iPhone companion app, we had the option "app can run independently of companion iphone" enabled.

The problem we have is that many of our users don't know that there is an iOS app because the app runs independently.

We would like to change it so that, if the user has enabled the automatic download of both versions, in the next update the iOS version will be downloaded as well, so that the user will see it.

However, we have read that if "app can run independently of companion iphone" is enabled, it cannot be reverted in future builds. Is this correct?

Another possible solution that we think might work is to display a message on first boot to inform users that we also have an iOS app, the problem is that our users usually see the message when they don't have the phone at hand (because of the nature of the app) and I don't know if a trigger can be made to install the iPhone app from the watch (or at least open the App Store).

Any suggestions or ideas?