Try Ally Bank for this. I use it in a similar way. They used to let you create a bunch of accounts but they now have "buckets" in their accounts. I find it pretty useful either way.
Only for savings, which is neat but not as useful.
Interesting, I never noticed buckets were a savings only feature. I've got a checking and a savings account there. To spend money I transfer to checking. There are federal transfer limits on savings accounts though, which could get in the way for some people.
Simple was savings only until pretty recently too so I’m not sure it’d be a deal breaker for most.
That's incorrect. Simple was checking only until recently. (been a simple customer for about 7 years)