I don't know about Wealthfolio, but the import QFX/OFX/CSV/etc. into GnuCash has ways to reconcile that with transactions you've manually recorded/edited, which can be much richer than the bank or CC knows. (GnuCash also has a way to import via network access, but I haven't tried it.)
(Example of richness: splitting am Amazon CC charge into the multiple expense accounts for the items that went into the order, and also accounting for the CC rewards and the Gift Card balance that contributed.)
I tried taking a break from GnuCash for maybe year, and going to a spreadsheet, and found: (1) it was still substantial work to maintain an accurate view of balances, and (2) I was missing a lot of information I found I needed in practice.
(Example of richness: splitting am Amazon CC charge into the multiple expense accounts for the items that went into the order, and also accounting for the CC rewards and the Gift Card balance that contributed.)
I tried taking a break from GnuCash for maybe year, and going to a spreadsheet, and found: (1) it was still substantial work to maintain an accurate view of balances, and (2) I was missing a lot of information I found I needed in practice.