Not completely correct. Once approved by Apple the developer can release the app on the date/time the developer wants: right away or later, not just on a Thursday.
My Conclusion is that the app has been submitted for approval (when ??) and the waiting is for approval. Then Obsidian can release (at any time Obsidian wants).
So the waiting is for Apple approval and Obsidian to release
In my experience, your app should be available within hours after publishing to the Play Store. So Android is completely up to you. Apple is the one with the approval process, and even that is getting much faster than it used to be.
Well, Google play does its update every Thursday. So I guess if they want be featured on the front page in the "Newly added + updsted" tab, they have to wait for that day.
