Just speculating here, Money jar feature. Multiple jars for saving money for different uses. "spend" "save" "splurge" a bit of barefoot money management inspired idea. This is just my own guess, otherwise I can't see any other real advantage. A way to visually seperate savings.
Not everyone has the same level of financial understanding. Someone using 15 personal accounts would be very unlikely tho.
APT Price at posting:
$102.70 Sentiment: Buy Disclosure: Held