Yes. In Jain Dharma, apple is a “phala” (fruit) and is permitted.

How to eat it in a Jain way (ahimsa and care):

• Eat fruit that is already detached; do not pluck from the tree yourself.
• Wash with filtered water and check carefully for insects or worm holes.
• Prefer eating in daylight; strict Jains avoid eating after sunset to reduce harm to tiny beings.
• Eat it fresh; do not keep cut apple overnight.
• Avoid preparations that involve fermentation or alcohol (e.g., hard cider) and avoid honey coatings.

Tradition notes:

• Shwetambar: During Paryushan, green vegetables are avoided; fruits like apple are generally allowed unless you have taken a special fast (upvas) restricting all food.
• Digambar: During Das Lakshan and other vows, many observe upvas/ekasan; fruit is fine unless your specific vow limits it.

If you are on a particular vrata (fast or renunciation), follow that rule first.