Reverse image search I found somewhere saying they’re Grenadine apples. But there are several types that are pink in the middle. My personal favorite apple ever are Lucy Glo which are also pink 🩷

Persimmon can be blue, but that picture is edited and over-saturated. They’re darker and have a powder coat, like blueberries. Wouldn’t be surprised if the apple picture was also edited, but they can have pink flesh.