There are dozens of free invoicing apps for freelancers. But "free" means very different things depending on who is offering it. Some are genuinely free. Some are free with limited features that push you toward a paid plan. Some are free but harvest your business data. And some are so complicated that a simple PDF takes 20 minutes to produce.

We tested the most popular options and compared them honestly so you can pick the right one for your situation.

What to Look For in a Free Invoice App

No watermarks: A branded watermark on your invoice looks unprofessional
No invoice limits: Some "free" plans cap you at 5 invoices per month
Privacy: Do they store your client data on their servers?
Simplicity: Can you create a PDF in under 2 minutes?
PDF download: Can you download the invoice without paying?
No forced sign-up: Do you have to create an account just to use it?

The Comparison

1. FluxInvoice — Best for Privacy and Speed

Price: 100% free, always. No plans, no paid tiers.

Best for: Freelancers who want to create a professional PDF invoice in under 60 seconds with zero sign-up.

✅ No watermarks ever
✅ No sign-up required
✅ Unlimited invoices
✅ Runs 100% in your browser — your data never leaves your device
✅ Multiple professional templates
✅ Logo upload, multi-currency, tax, discounts
❌ No payment processing (use Wise or PayPal separately)
❌ No automated reminders or recurring invoices

Try FluxInvoice free →

2. Wave — Best for Full Accounting Needs

Price: Free for invoicing and accounting; paid add-ons for payroll and payment processing (2.9% + $0.60 per transaction).

Best for: Freelancers and very small businesses who need full double-entry bookkeeping, expense tracking, and reporting — not just PDF invoices.

✅ Fully-featured accounting software at no cost
✅ Professional templates
✅ Automated payment reminders
❌ Requires account creation and data stored on Wave's servers
❌ Payment processing fees are higher than Stripe
❌ More complex — overkill if you just need a PDF

3. Zoho Invoice — Best Free Plan for Recurring Clients

Price: Free (permanently, for up to 1,000 invoices per year).

Best for: Freelancers with a small number of recurring clients who want automated invoicing and professional follow-ups.

✅ Recurring invoice automation
✅ Automated payment reminders
✅ Client portal
❌ Requires account — all data stored on Zoho's servers
❌ Slower to use for one-off quick invoices
❌ Learning curve for new users

4. Invoice Ninja — Best Open-Source Option

Price: Free plan (up to 20 clients); Paid plans from $10/month.

Best for: Tech-savvy freelancers who want an open-source solution or want to self-host their data.

✅ Open source — you can audit the code
✅ Self-hosting option for maximum data privacy
✅ Very feature-rich
❌ Complex setup
❌ Free plan limited to 20 clients

5. PayPal Invoicing — Best for Getting Paid Online Immediately

Price: Free to create invoices; 3.49% + fixed fee when clients pay via PayPal.

Best for: Freelancers whose clients are already PayPal users and want to pay instantly online.

✅ Clients can pay with one click
✅ Extremely simple to use
❌ Highest payment processing fees
❌ Invoices look generic and unbranded
❌ Requires both you and the client to have PayPal

The Verdict

There is no single best invoicing app for everyone. The right choice depends on your specific situation:

Need a quick, professional PDF right now with no fuss? → Use FluxInvoice
Need full bookkeeping + expense tracking? → Use Wave
Have recurring clients and want automation? → Use Zoho Invoice
Want clients to pay you online immediately? → Use PayPal Invoicing

Best Free Invoice Apps for Freelancers in 2026 (Honest Comparison)