Getting paid should be the simplest part of freelancing. You do the work, you send an invoice, the money lands in your account. But too many freelancers lose hours each month wrestling with bloated software, confusing pricing tiers, or apps that require an internet connection just to look up a client's address. The right invoicing app should save you time, not cost you more of it.

We tested dozens of invoicing tools to find the ones that actually deliver for independent workers — people who need professional invoices without enterprise complexity. Whether you're a graphic designer billing retainer clients or a consultant tracking hours across multiple projects, this list covers the best free and affordable options available right now.

1. Stintly — Best Free Offline Invoicing App

Pricing: Free (no hidden tiers, no feature gating)

Stintly earns the top spot for a specific reason: it does invoicing and expense tracking without requiring an account, an internet connection, or a subscription. For freelancers who want a clean, no-nonsense tool that works on their iPhone from day one, it's hard to beat.

The app lets you create professional invoices, track expenses, log mileage, and monitor your income — all locally on your device. There's no cloud signup flow, no "free trial" countdown, and no pressure to upgrade. You open the app, create an invoice, and send it. That simplicity is its biggest strength.

What Stintly does well:

  • Completely free with no account required
  • Works offline — create and manage invoices anywhere
  • Built-in expense tracking and mileage logging
  • Clean, intuitive interface designed for solo workers
  • Income reports that help with quarterly tax prep

Where it falls short:

  • iOS only — no Android or web version currently
  • No built-in payment processing (clients pay via their preferred method)
  • Limited integrations with accounting software

Stintly is ideal for freelancers who want to keep things simple and private. If you don't need payroll, inventory, or a dozen integrations, it does the core job — invoicing, expenses, and financial tracking — better than apps charging $20 or more per month.

Stintly is free to download. Download Stintly for Free — no account needed, works offline.

2. Wave — Best Free Web-Based Option

Pricing: Free for invoicing and accounting; payment processing at 2.9% + $0.60 per credit card transaction

Wave has long been the go-to recommendation for freelancers who want full accounting software without paying for it. The invoicing features are solid: customizable templates, automatic payment reminders, and the ability to accept credit card payments directly through your invoices.

What Wave does well:

  • Unlimited invoicing and accounting features at no cost
  • Built-in payment processing so clients can pay online
  • Receipt scanning and bank connection for expense tracking
  • Financial reports including profit & loss and balance sheets

Where it falls short:

  • Requires an internet connection and account creation
  • Customer support is limited on the free plan
  • Mobile app is less polished than the web experience
  • Payment processing fees add up on high-volume invoicing

Wave makes the most sense for freelancers who want invoicing tightly integrated with double-entry accounting. If you're comfortable working in a browser and want to accept credit card payments without a separate processor, it's an excellent choice. Just be aware that "free" comes with transaction fees once you enable online payments.

3. QuickBooks Self-Employed — Best for Tax Preparation

Pricing: Starting at $15/month (frequently discounted to $7.50/month for the first three months)

QuickBooks Self-Employed isn't free, but it earns a spot here because of how well it handles the tax side of freelancing. The app automatically categorizes expenses, estimates quarterly taxes, and integrates directly with TurboTax. For freelancers who dread tax season, that integration alone can justify the monthly cost.

What QuickBooks does well:

  • Automatic expense categorization with bank feeds
  • Quarterly tax estimation and Schedule C preparation
  • Seamless TurboTax integration at year-end
  • Mileage tracking with GPS
  • Widely recognized by accountants and bookkeepers

Where it falls short:

  • Monthly subscription adds up — $180/year at full price
  • Interface can feel cluttered for simple invoicing needs
  • Features overlap with the more expensive QuickBooks Online plans, creating confusion
  • Requires an internet connection for most features

If your primary pain point is taxes rather than invoicing, QuickBooks Self-Employed is worth the investment. But if you mainly need to send invoices and track what you earn, you're paying for a lot of features you may never touch. Freelancers who just want to stay on top of quarterly payments might find simpler tools more practical.

4. FreshBooks — Best for Client-Facing Professionalism

Pricing: Lite plan at $19/month (up to 5 billable clients); 30-day free trial

FreshBooks has built its reputation on making freelancers look polished. The invoices are clean, the client portal is professional, and the time tracking feature integrates directly into your billing workflow. If you want clients to see you as an established business rather than a solo operator, FreshBooks delivers that impression.

What FreshBooks does well:

  • Beautiful, customizable invoice templates
  • Built-in time tracking that converts hours to invoices
  • Client portal where customers can view and pay invoices
  • Automated late payment reminders and thank-you emails
  • Solid mobile app for iOS and Android

Where it falls short:

  • Expensive for freelancers with more than five clients
  • No free tier beyond the trial period
  • Some features (like proposals and bank reconciliation) are locked behind higher-tier plans
  • Can be overkill for freelancers sending fewer than ten invoices per month

FreshBooks is a strong choice if client perception matters to your business and you're willing to pay for it. Freelancers in creative fields — designers, photographers, consultants — often find the professional presentation worth the monthly fee. But the per-client pricing model can become expensive fast as your business grows.

5. Zoho Invoice — Best Free Option With Automation

Pricing: Free for up to 1,000 invoices per year

Zoho Invoice is one of the more generous free invoicing tools available. You get workflow automation, recurring invoices, time tracking, and a client portal — all without paying a cent, as long as you stay under 1,000 invoices annually. For most freelancers, that limit is more than enough.

What Zoho Invoice does well:

  • Generous free tier with robust features
  • Workflow automation for recurring invoices and reminders
  • Multi-currency support for international clients
  • Integration with the broader Zoho ecosystem (CRM, Books, Projects)
  • Client portal with online payment options

Where it falls short:

  • Interface can feel complex for simple needs
  • Requires a Zoho account and internet connection
  • The broader Zoho ecosystem can create upsell pressure
  • Customer support response times vary on the free plan

Zoho Invoice is best for freelancers who want automation without a price tag. If you bill the same clients monthly and want invoices to go out automatically, Zoho handles that better than most free tools. It's also a smart pick if you're already using other Zoho products for your business. Freelancers running service-based businesses — like those using LawnBook for lawn care scheduling or ShineBook for managing cleaning clients — often benefit from tools that automate recurring billing alongside their operations.

6. Invoice Ninja — Best Open-Source Option

Pricing: Free self-hosted; hosted Pro plan at $10/month

Invoice Ninja appeals to freelancers who value transparency and control. As an open-source platform, you can host it yourself for free or use their managed hosting for a reasonable monthly fee. The feature set rivals paid competitors: recurring invoices, time tracking, expense management, proposals, and support for over 40 payment gateways.

What Invoice Ninja does well:

  • Open-source with full self-hosting option
  • Extensive payment gateway integrations
  • Proposals and quotes alongside invoicing
  • White-label option on paid plans
  • Active development community and regular updates

Where it falls short:

  • Self-hosting requires technical knowledge
  • Interface is functional but not as polished as FreshBooks
  • Learning curve is steeper than simpler tools
  • Some advanced features require the Pro plan

Invoice Ninja is the right fit for tech-savvy freelancers who want maximum control over their data and don't mind getting their hands dirty with setup. If you're comfortable with server administration, the self-hosted option gives you a full-featured invoicing platform at zero cost. Landlords and property managers who prefer similar control over their tools often gravitate toward apps like KeyLoft for the same reason — full capability without recurring fees.

How We Picked These Apps

We evaluated each app against criteria that matter most to freelancers:

  • True cost: We looked beyond "free" labels to understand what you actually pay, including transaction fees, client limits, and feature restrictions on lower tiers.
  • Ease of setup: How quickly can you send your first invoice? We timed the process from download or signup to a completed invoice for each app.
  • Offline capability: Freelancers work from coffee shops, job sites, and client offices. Apps that require a constant internet connection lose points for practicality.
  • Invoice quality: We assessed the professionalism of default templates and the level of customization available without upgrading.
  • Expense tracking: Since invoicing and expense management go hand in hand for freelancers, we gave preference to apps that handle both rather than just one.
  • Privacy and data ownership: We considered whether apps require account creation, how they handle your financial data, and whether you can export everything if you leave.

We intentionally excluded apps aimed at mid-size businesses or teams, since freelancers have fundamentally different needs. A solo graphic designer and a 50-person agency need very different tools, and this list is built for the solo operator.

Which App Is Right for You?

The best invoicing app depends on what you value most. Here's a quick decision framework:

  • You want free and simple: Start with Stintly. No account, no internet required, no cost. If you outgrow it, you'll know exactly what features you need in a paid tool.
  • You want free with online payments: Go with Wave. You'll pay transaction fees when clients pay by card, but the invoicing itself costs nothing.
  • You dread tax season: QuickBooks Self-Employed is worth the monthly fee if tax prep and quarterly estimates are your biggest headache.
  • Client perception is everything: FreshBooks creates the most polished client experience, from invoice design to the payment portal.
  • You bill the same clients monthly: Zoho Invoice handles recurring invoices and automation better than most free tools.
  • You want full control of your data: Invoice Ninja gives you an open-source, self-hosted option with no vendor lock-in.

One pattern we see consistently: freelancers who start with a simple, free tool and upgrade only when they hit a genuine limitation make better software choices than those who buy the most expensive option upfront. You don't need enterprise invoicing software to send a $500 invoice for a logo design.

The same principle applies across service industries. Contractors managing job costing and billing often find that specialized tools like TrestleBook handle their invoicing needs more efficiently than generic business software, because the features match the workflow. Whatever tool you choose, the goal is the same: spend less time on paperwork and more time on the work that earns you money.

Start with any of these apps, send a few invoices, and see what fits. The best invoicing app is the one you'll actually use every time you finish a project — because an unsent invoice is the most expensive mistake a freelancer can make.