Earlier quoted context omitted.
I use Tiller. They take the transaction history from your linked bank accounts and store it in a google spreadsheet for you. That's it. $99 a year. From there I unleashed claude on my spending habits. I'm only a few months in so I'm more focused on financial hygiene.
I would suggest also simplefin. Only $15/year. Its a bit more simple/restrictive (e.g. they only allow like 25 api calls per day), but if you are just doing simple personal budget tracking they are more than enough.
I found SnapTrade[1] which gives away a free personal account with up to 20 brokerage connections (i.e. logins, not accounts).
I'm using simplefin for credit cards and loans and SnapTrade for investment accounts. Seems to be working well so far.