No sorry, for that you need to be a Patreon. However, everything you do on the desktop will be visible and usable in the mobile app as well.
The Patreon subscription is the only cross-platform subscription linked to the email you use to log in and it will work on iOS, Android, Desktop (mac, windows, linux).
If you subscribe using Google Play, the subscription will not be linked to the email you use to login in RPG plus, but it will be linked to your Google Play account and it will work on all your Android devices linked to that Google Play account.
Same for iOS , if you subscribe using the App Store, the subscription will not be linked to the email you use to login in RPG plus, but it will be linked to your Apple account and it will work on all your iOS/macOS devices linked to that Apple account.
Different people have different preferences, we are trying to give all the options, let us know what you think
Thanks