You can connect Tiller Money’s bank data feeds to any Google Sheet for the transactions to do the cash flow piece. As for the inventory piece we don’t have anything out of the box for that.
Here is a guide on getting your sheet tuned to work with Tiller Money Feeds
And from there you can use the Tiller Money Labs add-on to add solutions for cash flow. A few of the solutions that have this built in are Yearly Budget and Monthly Analysis sheet.
They do require that you have a Categories sheet with 12 budget months so if your Google Sheet already has a tab named “Categories” you’d want to rename it before trying to install.