I think you will find the 15 different accounts are "Buckets" for budgeting.
1 account for car payments 1 account for groceries 1 account for insurances
etc etc
You can work out your outgoings, automatically set up your deposit from your salary to go into that account. Get paid 1% while holding cash their, work out what you can spend for discretionary etc etc.
They will promote this as tool for responsible budgeting and lending. Further reduce their loss margins, and probably offer more discounts and cash backs if you have a deposit account.
It's all comes together so you more or less need APT as it's the best financial tool in your life.
APT Price at posting:
$107.51 Sentiment: Buy Disclosure: Held