Free App Developer Invoice Template & Generator

Your invoice needs to show exactly what you built or which phase you completed. If you are billing hourly, break down hours by activity like development, testing, or client revisions. Fixed-price projects should reference the original scope document or contract so there is no confusion about what you delivered. Include your business details and tax ID if you have one because corporate clients need this for their accounting systems. Always add the app name or project code they use internally.

Most app developers take 25-50% upfront before writing any code. Then you bill at milestones like design approval, beta delivery, or app store submission. Net 15 or Net 30 terms work for established clients. Smaller clients often pay on delivery. Do not start the next phase until the previous invoice clears.

Send invoices the moment you hit a milestone, not days later when you remember. Attach screenshots or a TestFlight link as proof of delivery. Clients delay payment when they cannot quickly verify the work is done. If you are doing ongoing maintenance, bill on the first of the month with a simple recurring invoice. People pay routine bills faster than surprise ones.