Hi Steven! Thanks for the great questions.
As you noted, the SketchUp Viewer for Mobile app is designed to run on a wide range of iOS & Android devices. We launched V4 of the mobile app this past June 2018, and introduced features that allow folks to view models in AR on ARKit enabled iOS devices and ARCore enabled Android devices. At that time, we also made a change to the pricing and availability of the SketchUp Viewer for Mobile app, making the app’s standard model viewing features freely available. The AR model viewing features were/are offered via in-app subscription of $9.99/yr. As a courtesy for customers who purchased the app prior to June 2018, we wired up the app to give those folks free access to the AR model viewing features for their first year (that 1yr clock started ticking the day they upgraded to V4).
With this week’s launch, the standard viewing features remain freely available. What’s changed is that access to the AR model viewing features are now included and available to anyone with an active SketchUp Shop, SketchUp Pro or SketchUp Studio subscription–without having to separately purchase an in-app subscription for those features.
If you are a SketchUp Free user who purchased the Mobile app way back when, who then upgraded to V4 and started a 1-yr trial of the AR features, the remaining time left on that trial will carry over to V5.
When the courtesy trial expires, you will either have to purchase the in-app subscription ($9.99/yr) or sign in with at least an active SketchUp Shop subscription ($119/yr) to reactivate the Mobile AR features.
Side-note, you mentioned VR a few times in your original post. I assume you meant AR, but if you have questions about VR (available for Desktop VR devices, not Mobile VR), let me know and I’ll try to answer those as well.
Second side note, customers who have purchased the $9.99/yr in-app subscription via the Apple App store or Google Play store, and who purchase a SketchUp Shop, SketchUp Pro or SketchUp Studio subscription should be able to cancel the auto-renew billing on the App store or Play store without having to worry about interrupting their access to the Mobile AR features.
I hope this helps! We’ve tried (really) hard to cover all of our bases, in fact this post covers only a portion of all the scenarios. So if you see a gap or have any further questions, please let me know