Which integrations can I connect, and what does each one do?

Two connections carry the product: the bank, through Plaid, so every dollar in and out is real; and Stripe, so an invoice can actually be paid online and paid out to you. The rest are importers — useful, never required. Square brings in sales and customers (invoicing still runs through Stripe). QuickBooks syncs expenses, customers and paid invoices; Xero syncs expenses and bills; FreshBooks syncs expenses. Google Ads and Meta Ads bring campaign spend, clicks, leads and conversions to the Ads page and need the Ad Integrations add-on. Google Business Profile brings calls, direction requests, reviews and your rating onto Home and the Money page. PayPal and Clover are retired — no new connection can be made, though history that synced through them still counts. A universal CSV importer covers the systems with no connection, Jobber and Housecall Pro exports among them.