PlayStation Plus is a service available on Sony PlayStation that requires a regular subscription fee. Thanks to PS+, you can play online on PS4 (and PlayStation 3) with friends or other PlayStation Network users.
After the release of Apex Legends, many players were asking whether they will need PS Plus subscription even though the game is available in the free-to-play model?
No, you don't need the subscription. You can play Apex Legends on PS4 without owning PlayStation Plus. Simply download the game, create an Origin account and that is it.