So I charge my phone last night. I wake up today and I have 20 updates for the App Store. I look through them and they're all ones that I already did the last couple weeks. Why would that happen?
I've also had this issue. I had 5 updates that were already installed. I closed the App Store in the switcher and reopened it and that fixed it.
I just have auto update turned on and I just don't worry about it. This was a great feature on my Android phone, I'm glad Apple adopted it.