Invoice Ninja

Overview

Invoice Ninja is an invoicing and business-management app for freelancers and small businesses. It suits operators who want to connect client quotes and billing with project work, and can choose between a hosted service and self-hosting. Its broad workflow is a strength, but the hosted Free plan’s five-client ceiling may quickly become a constraint.

Key features

Quotes, invoices, and payments

Users can create quotes and invoices, manage products, preview PDFs, and send quotes for e-signature and conversion into invoices. Recurring invoices and payment requests support repeat billing and collection. Clients can pay online through gateways including Stripe, PayPal, Square, GoCardless, Authorize.net, and Mollie. The Free plan includes unlimited invoicing and online payments, but caps hosted accounts at five clients; that is generous on invoice volume, not on customer growth.

Projects, time, and integrations

Billable time tracking, task management, and Kanban boards connect project work to billing: tracked time can be turned into invoices. Vendors and expenses round out the workflow. Zapier, Make, Pabbly, n8n, Integrately, REST API access, and webhooks offer routes to automation, although API access is a Pro feature.

Hosting, security, and licensing

The hosted service says it encrypts data in transit with TLS 1.2+ and at rest with AES-256, and offers MFA. It states that it has completed a SOC 2 examination and identifies PCI-DSS and GDPR compliance; its SOC 2 report is available to customers and prospective customers under NDA.

Self-hosting costs nothing to download and removes stated client, invoice, and feature paywalls, but the server itself has separate hosting costs and the operator must secure it. The self-hosted code is under Elastic License v2: business use and modification are permitted, while resale or providing it as a managed service to others requires a separate agreement.

Pricing

Free costs nothing, billed forever free. It includes up to five clients, unlimited invoicing, 11 professional invoice templates, online payments, projects, time tracking, vendors, and expenses. It fits a very small client roster; businesses with more than five clients need another option.

Self-hosted is free, free to download and self-host; server hosting is separately paid. It has no stated client limits, invoice caps, or feature paywalls, making it the cost-conscious route for people able to operate and secure their own server.

Ninja Pro costs $14 a month, billed monthly, or $140 billed annually. It adds unlimited clients and invoices, API access, custom invoice designs, automatic reminders, reports, and 10 interlinked companies. This is the natural hosted step up when the Free client cap is too low or those billing tools matter.

Enterprise costs $18 a month, billed monthly, and scales by account users. It supports up to 100 account users and adds user permissions, bank sync, e-Invoicing and PEPPOL, 250 PEPPOL credits, and document uploads. It is aimed at teams that need those controls and workflows; the account-user price scaling matters as the team grows.

Premium Business starts at $280/year. It includes Pro and Enterprise features, developer concierge, direct priority support, invoice design service, data migration assistance, and custom reports. This suits businesses seeking implementation and service support rather than only software features.

There is no free trial. Community forums and documentation are listed for all plans, while direct priority support is for paid plans.

Platforms

Invoice Ninja offers web, Windows, macOS, Linux, iOS, and Android apps, with data syncing across devices. API access is also supported. The choice between hosted and self-hosted deployment is particularly relevant for businesses deciding who will manage the data environment.

Who it's for

Invoice Ninja is a strong fit for freelancers and small businesses that bill for project work and want time tracking, expenses, and online payment collection alongside invoices. The hosted Free plan can serve a small roster without an invoice-volume cap. It is less suitable for a growing customer base that wants to stay free, or for teams that cannot take on server security but need more than five clients.

Pros and cons

Pros

• Billing and project work connect: billable time can become invoices, reducing the gap between tracked work and client billing.
• Free plan has unlimited invoicing: its main constraint is five clients, not invoice count, and online payments are included.
• Choice of deployment: self-hosting avoids stated feature paywalls and client or invoice limits for users willing to manage server security and hosting.
• Multiple payment gateways: clients can pay through several named providers rather than a single supported route.

Cons

• Free hosted use is capped at five clients: a growing client list requires Pro or self-hosting.
• Self-hosting shifts operational responsibility: server hosting costs extra, and securing financial and client data is the user's job.
• Enterprise pricing scales by users: the 18.00 USD monthly starting price is not a fixed team-wide cost.
• No free trial: buyers cannot try a paid plan for a stated trial period before subscribing.

Alternatives

Contractor invoicing software is a broader category guide for comparing options. Choose Contractor+ if a basic CRM and a free allowance of up to 250 leads and clients matter more than invoice volume: its free plan allows five estimates or invoices a month and includes web, mobile, and tablet access; it also offers a free trial.

Zoho Invoice may suit an Indian business seeking a free plan, with up to two users, three projects, and 500 invoices per year. Bookipi is another mobile and web option, but its free plan limits both invoices and eSignatures to three per month. For a small volume of offline mobile billing, Invoice Plus offers a free plan with 10 invoices per month and basic expense tracking.

Invoicely may fit a user whose needs fit five invoices and three saved clients monthly, with PayPal as the listed payment option. Just Invoice offers a no-account guest invoice generator. InvoiceGo is an iOS alternative with a free download and in-app purchases. Invoice Home offers a free plan limited to invoices up to $1,000 for the past 30 days.

Verdict

Choose Invoice Ninja if you want project time, expenses, quotes, invoicing, and online payments in one system, especially if you can use the five-client Free plan or are prepared to pay for unlimited hosted clients. Its standout advantage is the link between tracked work and billing; look elsewhere if you need a larger free client roster or do not want to manage a server but also need to avoid a paid plan.