Root partners with Standard Bank South Africa to offer programmable bank account

    safe_margin = rent + food + 500
    emergency_fund_bal = monthly_salary * 3

    // pay all credit cards if I can
    sort(my_credit_cards, apr) 
    for (cc in my_credit_cards) {
      if (cc.statement_bal == 0 || cc.paid) skip
      if (checking.bal - cc.statement_bal - safe_margin >= 0) {
        pay(to=cc, from=checking, amount=cc.statement_bal);
        cc.paid = 1
      } else if (checking.balance > cc.min_pay)  {
        pay(to=cc, from=checking, amount=cc.min_pay)
      }
    }

    // refill the emergency funds if needed and can
    if (savings.bal < emergency_fund_bal && checking.bal > safe_margin) {
      transfer(from=checking, to=checking, 
        amount=min(
          emergency_fund_bal - savings.bal, 
          checking.bal - safe_margin)
       )
    }

    // invest the rest
    if (checking.bal > safe_margin) {
      invest(checking.bal - safe_margin)
    }

I mean, assuming you can give out cards linked to said account, to discern who is using the account. That'd be incredibly useful. I used Google Wallet for this previously, and now use Simple, but it'd be nice to not have to approve requests and instead implement some logic to do so.

If anyone working for Simple sees this: get on this! I'd move from my main bank account to entirely Simple just for this functionality.

I'm keen to see what sort of use cases people come up with.