Best Free Invoice Generator App in 2026 (Reviewed)

Whether you call it an invoice maker app or an invoice generator app, the right free invoice generator app depends on one question: what do you actually need it to do? If you just need to create a PDF and email it from your phone, almost any app will work. If you need to track which invoices have been paid, collect money online, and send automatic reminders, the list gets shorter fast.

Quick pick: WaffleInvoice, if you want unlimited free invoices and clients with no card required to sign up.

Here is an honest look at the best free invoice maker apps available in 2026, what each one does well, and what it will eventually cost you if you grow.

What is an invoice app?

An invoice app is just software, usually mobile-friendly, that lets you create and send an invoice without sitting down at a desktop. If you searched "invoice app," you're probably after something simple: open it on your phone, add what you're billing for, and send it to the client on the spot. WaffleInvoice works exactly this way from any mobile browser, no separate download required.

What to look for in a free invoice maker app

Before comparing apps, it helps to know which features matter and which ones are marketing fluff.

What actually matters:

• Create a professional-looking invoice in under two minutes
• Send it directly to the client from inside the app (not just download a PDF)
• See whether the client has opened it and when it is due
• Collect payment online, not just generate a PDF they have to pay through their bank
• Send automatic reminders for overdue invoices

What is usually overhyped:

• Dozens of templates you will never use after picking your first one
• "AI-powered" descriptions that write generic line items
• Integrations with accounting software you do not use yet

The best free invoice maker apps compared

WaffleInvoice

WaffleInvoice is built specifically for freelancers and service businesses. The free plan gives you unlimited invoices and estimates, email sending, a client portal, and a client-facing dashboard where clients can view all their invoices in one place. No watermarks, no time limit. No card to sign up; card on first Send, never charged on Free.

Where WaffleInvoice stands out is in payment collection and automation. The Pro plan ($19/month) adds online ACH and card payments, automatic payment reminders, SMS notifications, recurring invoices, and late fee automation. These are the features that actually get you paid faster, and they are accessible at a price most freelancers can justify after one additional paid invoice.

The free tier is genuinely free for as long as you want to use it, making it a strong choice even if you never upgrade.

Zoho Invoice

Zoho Invoice is free with no artificial limits on invoices or clients. It includes time tracking, expense recording, and online payment collection via Stripe and PayPal. The main drawback is that Zoho's interface is more complex than most freelancers need, and it is clearly designed as a gateway into the broader Zoho suite of business software. If you are not planning to use Zoho CRM, Zoho Books, or other Zoho products, you may find the interface cluttered.

Wave

Wave offers free invoicing and accounting, making it attractive for freelancers who want basic bookkeeping alongside invoicing. The invoicing itself is genuinely free with no limits. However, Wave charges 2.9% + $0.60 per credit card transaction and 1% per ACH payment (minimum $1), which adds up on higher-value invoices. Its mobile app is also less polished than competitors. Wave was acquired by H&R Block in 2019 and has seen slower feature development since.

Invoice Ninja

Invoice Ninja has a robust free tier for up to 100 clients and is open-source, which means you can self-host it if you have a server. It is a good option if you have technical comfort and want maximum control. The interface is feature-rich but can feel overwhelming if you are new to invoicing software.

PayPal Invoicing

PayPal Invoicing is free to create and send invoices, but PayPal charges their standard payment processing fees (3.49% + $0.49 for domestic card payments) when clients pay. It is the easiest option if both you and your clients are already in the PayPal ecosystem, but it is expensive for high-value invoices and some clients are uncomfortable with PayPal for business payments.

Which free invoice maker app should you choose?

For most freelancers and service businesses just starting out, the decision comes down to two factors: how much you want to pay for payment processing, and how much you care about your brand appearing on the invoice.

If you want a free start (no card to sign up; card on first Send, never charged on Free) and the option to add online payments later at a flat monthly rate (rather than per-transaction fees), WaffleInvoice is the clearest choice. The free tier is genuinely unlimited, and the Pro upgrade at $19/month includes ACH payments at cost rather than percentage-based processing fees.

If you want invoicing and basic accounting in one place and plan to stay on the free tier indefinitely, Zoho Invoice is worth a look.

If you already use PayPal for everything and your clients do too, PayPal Invoicing has the lowest friction to get started, just keep in mind the per-transaction fees will add up.

Using a free invoice maker app on mobile

Most service businesses are not at a desk when they finish a job. The ability to create and send an invoice from a phone while still on-site is one of the most practical things invoicing software can do for you.

WaffleInvoice's mobile-optimized interface works from any browser on any device. You can create a new invoice from your phone in about sixty seconds: select the client, add line items, set the due date, and send. The client gets an email with a link to their invoice immediately.

Getting paid within 24 hours of completing a job is one of the strongest predictors of actually getting paid in full. Invoicing on-site rather than when you get home (or worse, at the end of the week) is the simplest way to shorten your collection cycle.