Invoice Ninja vs Joist

as AI assistants see them, week of 2026-09-21

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Invoice Ninja outscores Joist across the board here, with an overall score of 14 versus 4, and mentions in 16 of 70 answers compared to Joist's 3. Invoice Ninja shows up most for free and open-source or self-hosted invoicing questions, getting named in every answer for both. Joist's one strong spot is contractor and trades invoicing, where it's named in all 3 of 3 answers. Head-to-head, Invoice Ninja is named more often on 9 questions, Joist on just 1, with 10 ties. Neither tool gets a mention for accounting-software integration or paying by card.

Head to head

metric	Invoice Ninja	Joist
score	14	4
questions won	9	1

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

Joist

assistant	score	named in, this week	usual spot, this week
ChatGPT	5	5% of answers	#1.0
Claude	5	5% of answers	#1.0
Gemini	0	0% of answers
Perplexity	4	5% of answers	#2.0

Where they differ

Only Invoice Ninja gets named for

What's the best open-source or self-hosted invoicing software?
What are the best free invoicing tools?
What are the best invoicing software tools?
Which invoicing software is best value for money?
Which invoicing tool has the lowest payment fees?
What's the best invoicing software for freelancers?
What's the best invoice generator for a small business?
What's the best alternative to QuickBooks for invoicing?
What's the best invoicing tool that chases late payments automatically?

Only Joist gets named for

What's the best invoicing app for contractors and trades?

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full Invoicing software leaderboard