Comparison

Invoice Ninja vs SolidInvoice

Invoice Ninja and SolidInvoice both land on Depends.

Invoice Ninja

Depends

Confidence: Medium

Solid buy for freelancers and self-hosters who want cheap, customizable invoicing with time-tracking built in.

Depends

Confidence: Medium

A solid $9/mo fit for freelancers who only need invoicing, recurring billing, and payments . especially if the free self-hosted version appeals.

Invoice Ninja versus SolidInvoice
Compare	Invoice Ninja	SolidInvoice
Verdict	Depends	Depends
Best for	Freelancers	Freelancers invoicing on a budget
Who it's not for	Anyone wanting hands-off SaaS with real support	Anyone needing full accounting: payroll, taxes, books
Privacy	Multiple CVEs including a 2026 open redirect; SSRF disclosed 2025; site malware incident 2022; SOC 2 completed for hosted.¹⁰	Active CVE history in 2025-2026: RCE-class deserialization, stored XSS, cross-user token access, and plaintext API tokens.
Support quality	Forum-based; bug and freeze complaint threads	Only email support documented; no user reports
Public sentiment	Praised for price and ease of use, but a vocal minority reports frustration and migrates to alternatives.^⁶	Reddit discussion centers on self-hosting SolidInvoice via Docker, NAS, and Proxmox; users find it simple and free but installation trips up novices.
Biggest gotcha	Self-hosters must patch fast; open redirect affected all versions through 5.13.26¹⁰	Multiple 2026 CVEs (token access, XSS, deserialization). Self-hosters must run latest version or risk compromise.