Plums are reddish on the inside too.
Pomegrnates and watermelon are red on the inside. Both have a lot of seeds.
Cherries are and usually strawberries are too. They are both sweet too. I love to eat them when they are in season. Hope this helps.
Water Melons are green on the outside and red on the inside. There are a lot of seeds in it as well!
Plums, blood oranges, and raspberries
A strawberry of an watermelon.
Cherries strawberry and watermelon and plum tomatoes radish
No, that is on ly the skin color.
Personally,I've never seen a apple that's red on the inside.But it's not impossible