take a photo of your receipt and automatically create the record from it - prefill date, amount and determine account from last 4 digits
save me time by allowing me to take a photo. the app could automatically extract info and create record for me.
Parsing is complicate, but at least it can be a 0-value record with a saved picture. So if in hurry we can come later and input data from the bill manually.
Bhaskara Ida Bagus commented
Or perhaps the ability to input them manually, should the place you're shopping in does not have a receipt (e.g. Indonesian roadside food vendors)