Friday 17 at 07:04, two more ratings have disappeared and now my average score is starting to drop...

So, it's usual for users to re-evaluate the apps? This never happened to me on Google Play. I'm genuinely curious because this didn't happen until this week. I've had a steady growth of 5-star reviews and suddenly, this week, 9 5-star reviews are missing which is almost a quarter of what I had and I haven't even updated the app or changed a thing. I'm really concerned and want to do something about it!!! It's also annoying to see there's no way to track the reviews, no history to show increase or decrease, which is available for many other metrics, but not for this very important one. Also, are Apple's rules for proper reviewing shown anywhere? It is already hard enough to get reviews so the least Apple could do is let users know if they're reviewing wrongly when they post their opinions.

Friday 17 at 09:35, two ratings less, it's 30 ratings now... Just baffled at how users will just re-enter the App Store to delete their reviews, what an odd behaviour! Really, never seen anything like this on Google Play. If they liked the app enough to give it a 5-star rating it would just make more sense if they re-evaluated the app with a lower score if they saw something they didn't like, right?

I still haven't figured out why the ratings come and go, just so strange for a user who give you 5 starts and then delete the rating. It is also odd that there is no tracking system to keep a record of this.