The main issue I've had with budgeting apps continues to be pulling in up-to-date transaction data, which is necessary to know how much I can spend right now. There always seems to be problems with the data syncing. Apple Card is the worst, as you can only pull transactions via wallet on device.
I wish we could just use a single bank account at the Fed. The banking network is absolutely shit and there's basically a 1% tax on everything that goes to the rich for no good reason.
Budgeting was soooo much easier with cash – it's maddening all the data is there for real-time personal finance but it can't be accessed.