Just like a bank, without the security. Have a look like modern banks are done say in the UK - Monzo etc.
I switched to OneFinance and have been generally happy with it as it caters most closely to the old Simple methodology, especially with configurable overdraft that was launched last month.
If anyone has experience with the others and how they've matured since Simple's departure, I'd be interesting to hear what you like and what you're excited for on their roadmap!
So ‘just like a bank, with the same security’ would be more accurate.