I've nearly finished building my own database in Google Appsheet for rabbit and litter tracking, including a simple CRM to track who we've sold what rabbit to. I have a reasonable understanding of databases (though I'm by no means a software pro) and have found this a fun project but well aware of the app's limitations and there is more manual stuff at present than I'd be comfortable with to share the app. Being an accountant, I have a separate spreadsheet for income and expenses (which automatically spits out an income statement and balance sheet, of course
) - I'd share it but it's not written for non-specialists and contains absolutely no explanatory notes on how to use. One day I'll complete this and share it...