Comparisons

Best Free Invoice Software for Small Businesses

By ProQuote Team · July 25, 2026 · 7 min read

"Free invoice software" usually means one of two things: a genuinely free tool, or a free tier designed to get you signed up before nudging you toward a paid plan once you need one more feature. Here's how ProQuote compares to three well-known names — Zoho Invoice, Invoice Ninja, and Wave — on the things that actually matter day to day: do you need an account, does it work without internet, where does your data live, and what does it actually cost.

Note: pricing and features for third-party products change over time — the comparison below reflects general, stable differences in how each product works, not specific prices. Check each provider's own site for current plans.

Quick Comparison

ProQuoteZoho InvoiceInvoice NinjaWave
Account/signup requiredNoYes (Zoho account)Yes (hosted version)Yes
Works offlineYes — installable PWANo, cloud-basedNo (unless self-hosted)No, cloud-based
Where data livesOnly on your deviceZoho's serversTheir servers, or your own if self-hostedWave's servers
ScopeQuotation, invoice, bill, delivery note, 80mm receiptsPart of the wider Zoho suiteInvoicing + project/expense trackingFull accounting suite + payroll (region-limited)
CostFree forever, no paid tierFree tier, upsells into Zoho ecosystemFree tier with limits; self-hosting is free but technicalFree invoicing; monetizes via payments/payroll add-ons

Why This Matters in Practice

No account means no lock-in

Zoho Invoice, Invoice Ninja's hosted version, and Wave all require creating an account before you can send your first invoice. That's not necessarily bad — it enables multi-device sync — but it also means your business data lives on someone else's servers, tied to a login you have to manage and remember. ProQuote skips this entirely: open the app, start creating, nothing to sign up for.

Offline access is not optional for many small businesses

All three alternatives are cloud-first products — you need a working internet connection to log in and use them (Invoice Ninja can be self-hosted to work around this, but that means running your own server, which is a real technical project, not a checkbox). ProQuote is an installable Progressive Web App: after the first visit, it keeps working with zero internet, which matters a lot if you're billing at a client site, a market stall, or anywhere with unreliable connectivity.

Broader platforms come with more complexity

Zoho Invoice sits inside the much larger Zoho ecosystem (CRM, Books, and dozens of other products); Wave is a full accounting and payroll platform; Invoice Ninja adds project and expense-tracking features. If you only need to send a clean quotation or invoice, ProQuote's narrower focus means less to learn and fewer menus between you and a finished PDF.

Cost structure

Zoho Invoice, Invoice Ninja, and Wave are free to start, but all three are built to eventually monetize — whether through upselling into a broader suite, tiered limits on clients/invoices, or take-rate payment processing. ProQuote has no paid tier at all today: every feature — themes, stamps, watermarks, unlimited documents — is free.

When an Alternative Might Actually Suit You Better

To be fair: if you need built-in payment processing, payroll, multi-user team accounts, or accounting features like bank reconciliation, a full platform like Wave or Zoho's ecosystem is doing a genuinely different job than ProQuote is designed for. ProQuote is built specifically for creating and sending polished quotations, invoices, bills, delivery notes, and shop receipts — not running your entire back office.

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Key Takeaways

Related reading: Invoice vs Bill vs Receipt | Free Invoice Templates (PDF)