Premium question

Vi

If I were to purchase premium, would it ONLY be premium on the app I buy it on (Glow) or would it include premium features across my account (both Glow and <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>)?

I am highly considering doing it, but considering period data doesn’t sync across the apps, I wonder if premium access would.