First FLIP!! Managing project costs

[Aaron Farr]

I'm partnered with another Bigger Pockets member for our first flip project!  It's a waterfront property in a desirable area so we are excited about the upside this one has.  My partner is the "money guy" and I am the project manager.  My question is:  

How do you manage and track expenses on a project like this?  Is there an app or something that we can both access, enter & categorize receipts/expenses??  What do you recommend?