Bandai Namco's free-to-play Soulcalibur: Unbreakable Soul launched today on iOS devices. The card-battler/fighter hybrid has you tap card commands to pull off moves, using elemental weapons. It boasts a PvP mode and ranked battles with 200 weapons and 150 avatars to choose from.
According to the announcement, the story follows Cassandra and the Edge Master as they search for the Soul Edge. You can find the app here.
Bandai Namco only announced Unbreakable Soul in April, and had previously with the concept in Tekken Card Tournament. That one was released on iOS and Android, but this is only announced for iOS so far.