The other day I happened to notice that Glasswire did an automatic update when I opened the Play Store. Checked the current release then and again today which indicated 1.0.46.
After checking today, I went to the Play Store and searched for Glasswire. It told me an Update was available which I installed. Now I have 1.0.50.
So there is some automatic update for Android, but it doesn’t appear to catch the most recent release. Just thought you would want to know.