The free invoice app for iPhone that works offline

Yes, with unlimited invoices and estimates on the free tier and all 37 templates available; free PDFs carry a small watermark. Premium removes the watermark and adds signature capture, payment reminders and due-date alerts, after a three-day trial. You then choose a weekly subscription or a one-time lifetime price, and the amount varies by region.

Yes. Invoice Pro runs on the device, so you can write the invoice, work out the tax and generate the PDF with the phone in aeroplane mode; a connection is needed only for whatever you use to send the file. The app is iPhone and iPad only, on iOS 15.1 or later, with no Android or web version.

Most jurisdictions expect a unique invoice number, the issue date, your business name and contact details, the client's details, an itemised description of what you supplied, the amount due and the payment terms. If you charge sales tax, or VAT depending on where you are, you normally also need your tax registration number and the tax shown separately. The exact list is set by your own country's rules, so check them rather than relying on a template alone.

Yes. Invoice Pro puts a tax badge on each line, so one row can sit at 9.25%, another at 8.5% and a third at 0%. The PDF then breaks the tax out by rate, which is what a mixed goods-and-labour job usually needs. Which rate applies to which item is a local rule, so confirm it with your tax authority or accountant.

An estimate is your best figure before the work is fully scoped and it can move; a quote is a fixed price you are offering to stand behind; an invoice is the request for payment once the work is delivered. In Invoice Pro, estimates sit in their own tab with draft, sent and approved states, so the client's approval is on record before you bill.

Beyond the usual header details, freelance invoices read better when each line names the deliverable and the period, such as "Landing page copy, August 2026", with the rate and hours or a fixed fee beside it. Add payment terms and your bank details, and keep invoice numbers sequential so your year-end reconciles. Invoice Pro stores client records with lifetime totals, so a repeat client is a couple of taps.

Send an estimate first and get it approved in writing, then invoice against that approved scope so any variation is visible. Contractors in the United States are usually also asked for a W-9 so the client can issue a 1099; other countries have their own equivalent, so check what yours requires. Invoice Pro keeps estimates and contracts in separate tabs, with effective and completion dates on the contract.

Shorten the terms and put the due date on the face of the invoice, then chase on a fixed schedule instead of when you happen to remember. Premium in Invoice Pro sends payment reminders and due-date alerts, and the invoice list filters down to what is still pending, so the arrears sit on one screen.

Yes. Record the amount received against the invoice with its date and method, and Invoice Pro generates a receipt for that payment while holding the balance due on the invoice. A partial-payment receipt should show what was paid, what it was paid against and how much is still outstanding.