Invoice Ninja vs Square Invoices
as AI assistants see them, week of 2026-09-21
Square Invoices comes out ahead of Invoice Ninja in current AI answers, with an overall score of 31 versus 14, and a stronger showing across every assistant (ChatGPT 21 vs 10, Claude 32 vs 23, Gemini 29 vs 8, Perplexity 42 vs 14). Square also gets named more often overall, in 31 of 70 answers compared to Invoice Ninja's 16 of 70. Head-to-head, Square Invoices leads on 10 questions to Invoice Ninja's 3, with 7 tied. Invoice Ninja does hold its own on free and open-source or self-hosted invoicing questions, appearing in all 4 and all 3 answers respectively, while Square dominates on ease of use and card payments, appearing in every answer for those questions too.
Head to head
| metric | Invoice Ninja | Square Invoices |
|---|---|---|
| score | 14 | 31 |
| questions won | 9 | 12 |
By assistant
Invoice Ninja
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 10 | 15% of answers | #4.0 |
| Claude | 23 | 40% of answers | #5.9 |
| Gemini | 8 | 10% of answers | #3.0 |
| Perplexity | 14 | 20% of answers | #4.0 |
Square Invoices
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 21 | 25% of answers | #2.4 |
| Claude | 32 | 50% of answers | #4.9 |
| Gemini | 29 | 50% of answers | #5.8 |
| Perplexity | 42 | 55% of answers | #3.0 |
Where they differ
Only Invoice Ninja gets named for
- What's the best open-source or self-hosted invoicing software?
- What's the best invoicing software for freelancers?
- What's the best invoicing tool that chases late payments automatically?
Only Square Invoices gets named for
- Which invoicing tool is easiest to use?
- What's the best tool to send an invoice and get paid by card?
- What's the best invoicing app for contractors and trades?
- What's the best invoicing software in 2026?
- What's the best invoicing tool that connects to accounting software?
- What's the best tool for recurring invoices and subscriptions?
More comparisons
- Invoice Ninja vs PayPal Invoicing
- Harvest vs Invoice Ninja
- Bonsai vs Invoice Ninja
- Invoice Ninja vs Stripe Invoicing
- Invoice Ninja vs Joist
- Square Invoices vs Xero
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full Invoicing software leaderboard