I've shared a similar spreadsheet with my past trip report, but I've got back and beefed up things. I've created a spreadsheet within Google Drive (sheets) that is intended to keep track of one's spending/gambling. The intention for it being in Google Drive is that it can be updated on a mobile device on the go. I use the 'Google Sheets' app on my phone to make additions/edits right away. (can also be used with Ipad/Android/Laptop). I’d also suggest to make the sheet an ‘offline file’ within the app so you’re able to access it at anytime even when coverage in casinos can be sketchy. I know that some/most will think it’s dumb or too tedious or pointless, but tracking like this is fun to me and I can see exactly where I sit on my gambling success/failure. Here is the link to the Google sheet. At the bottom you can click on the separate tabs for each day. There are basic instructions/steps on the first tab, but please feel free to ask any questions. (I've entered in a lot of random costs/games to show how everything works and how it's tracked) http://goo.gl/Rf3vQT **Mods: This might belong more in the Trip Reports forum, if so, please feel free to move there.