Free accounting software that tracks receipts?

[Wilson Churchill]

I know this has been discussed a lot, but with the advent of receipt scanning and mobile apps, I would like to find convenient ways to go paperless. Quickbooks mobile has a receipt scanning and automatic data entry feature, but the reviews are mixed. I have been using excel to track everything. I see at least one app that might compare to QB Online, called Hurdlr. 

Anyways, maybe I can just keep using excel, but put it on a "cloud" drive like Google Drive or OneDrive? I am looking to accomplish three main things without paying for software constantly:

1. Mobile bookkeeping on my phone

2. Electronic storage of receipts

3. Automatic mileage

So far I'm thinking just Excel, but on a shared drive. Maybe Onenote for the receipts, and some free app for mileage. Apparently it's possible to insert .pdf images into Excel, so I could insert the receipt images next to each line item.

Any other recommendations? I'm trying to make the bookkeeping more painless because I just went through about 700 receipts over the last few days.