How do you handle invoice data entry today?

I'm the maker of Sheetwise, which turns PDF and phone-photo invoices into a checked Excel sheet.

I'm curious how others deal with this today:

- Do you type invoice data into spreadsheets by hand, or use a tool?

- What goes wrong most often (blurry photos, odd layouts, totals that don't add up)?

Honest answers help me decide what to build next. Happy to answer questions about how it works.