Smartphone app to easily track expenses

[Dan Arcaro]

I'm a novice real estate investor with 3 rentals and have done about 5-10 flips over the last 3 years.   One of the biggest problems I have is that I'm not very good at tracking every expense, and associated them to each property.   I know there are countless ways of doing this on a computer, but I was wondering if there is a smartphone app that would make it easy to log things like when i pay cash, or use a credit card, and get them into Excel easily.    I thought of using google drive with a spreadsheet, but that seems clumsy.  I am inevitably NOT tracking every expense, especially cash.   Any input would be greatly appreciated.   Thanks so much! !