I have a fully working setup. In order to be useful for my personal budget management though I need some program to scan receipts and invoices via camera or pdf

I have a fully working setup. In order to be useful for my personal budget management though I need some program to scan receipts and invoices via camera or pdf, to be honest. Nonetheless. I am from germany and I successfully integrated sync with multiple bank accounts via aquafinance. I can pull down and automatically categorize transactions and even issue transfers. There are more reasons i did not fully commit yet: I have no automatic backup configured. I do not have an designated desktop-pc yet. Having all this important data on a mobile device is insecure imo. I have no _real_ usecase to apply double-checked accounting (hopefully this is the correct term). Nonetheless, it's great. If one had a tax-guy I guess it is even more beneficial.