The best replacement for apple juice is orange juice.

The best alternatives to apple juice are rated as following:
★★★★★  orange juice
★★★★  cider
★★★  apple cider
★★  cranberry juice
★★  grape juice
★  cider for hard cider
★  apple cider vinegar
★  apples
★  gatorade
  apple juice concentrate
  apple juice cocktail
  white grape juice
  apple sauce

Your alternative for apple juice is not listed? Suggest!
Speaking about apple juice, one probably shouldn't forget about vodka.

Other search terms related to apple juice and their ratings are:

★★★★★ vodka
★★★★ rum
★★★ apple cider vinegar
★★ creatine
★★ mulling spices
jack daniels
You have in mind a companion for apple juice and it is not yet here? Propose!

Google Trends

Scale is based on the average worldwide traffic of apple juice in all years. Click on graph for more.
apple juice
orange juice