A great free invoice app should do four things well: create professional invoices in under a minute, send them by email or text, accept online payments, and keep a clear record of who owes you what.
Glo Invoice gives you all of that on the 14-day free trial — cancel anytime. You can build line items, add tax and discounts, attach photos, and track when an invoice is sent, viewed, and paid.
If you outgrow free, paid plans add recurring invoices, automated reminders, mileage tracking, and crew management — useful once you're billing more than a handful of customers per month.