Invoice from the driveway, not the desk.
The best invoice app for iPhone is the one you will actually open standing in someone's driveway. That means it has to be fast, work on a phone screen, and not ask you to sign up before you can send anything. Here is how the main iPhone options compare, including where each one wins.
Updated 2026 · iPhone & iPad · Free to try, no signup
The short answer — InvoiceSonic has a native iPhone and iPad app and a browser version that share the same account — start an invoice on site, finish it at the desk. It is free to create invoices and takes no percentage of your payment.
Native iPhone and iPad app plus a full browser version on the same account. Free to create and download invoices, A$19/month on the web for emailing, recurring invoices and reminders. We never process your payment, so we never take a cut.
A polished, long-established iPhone app. Subscription-based with invoice limits on the free tier.
Excellent iPhone app and card handling, including Tap to Pay. Free to send invoices, but it earns a percentage of each payment.
A capable free iOS app if you are comfortable in the Zoho ecosystem. More setup than the simpler apps.
The mobile app is a companion to the accounting product rather than a standalone invoicing tool, and priced accordingly.
Several tools are browser-only and rely on you adding them to your home screen. That works, but it is not the same as a native app and it usually will not behave offline.
Enter your business name, tax number and how you want to be paid. Every later invoice reuses them.
Build the invoice while you are still on site. Invoices sent the same day are paid materially faster than ones sent at the weekend.
The web version shares the same account, so anything started on the phone can be finished on a bigger screen.
Download the iPhone app, or start free in your browser — same account either way.
Create a free invoiceInvoiceSonic if you want a native iPhone app that is free to create invoices and takes no percentage of your payment — you can also use the same account in a browser. Invoice Simple is the most polished pure-mobile option. Square Invoices is the best choice if you want to take card payments on the phone, though it charges a percentage of each payment.
Yes. InvoiceSonic is free to create and download invoices, with no signup required for your first one and no watermark. Zoho Invoice also has a genuinely capable free tier. Most other free apps either cap invoices per month or earn from payment processing.
Yes. Build the invoice in the app, download the PDF or email it directly. Sending from the job rather than back at the office is the single easiest change that gets invoices paid sooner.
Yes — InvoiceSonic's iOS app and web app use the same account, so an invoice started on your phone can be finished on your laptop and your clients and settings are shared.
InvoiceSonic runs in any browser on macOS, so there is nothing to install. The iPhone and iPad app covers mobile, and both use the same account.
Invoice app for small business · Free invoice generator · Invoice app Australia · Free receipt template · Venmo invoice template · Cash App invoice template · Payment fee calculator