Ripen
Ripens Berries and doubles their effect.
Gluttony
Makes the Pokémon eat a held Berry when its HP drops to half or less, which is sooner than usual.
It grows by eating the flesh of an apple. Applin uses its own body fluid to strengthen the apple’s skin and prevent it from rotting.
Applin lives inside an apple. When an Applin is separated from its apple, its body loses moisture and the Pokémon grows weak.