keyword

best invoice app

Monthly search volume and cost-per-click data for "best invoice app" in US.

$ curl "https://app.seodata.dev/v1/search-volume?q=best-invoice-app" +--------------+------------------+ | volume | 1,600 | | cpc | $28.77 | | competition | 0.42 | | country | US | | updated | 2026-03-29 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
app invoices	6,600	$20.73	20/20
invoice app	6,600	$23.72	20/20
invoice application	6,600	$20.73	20/20
invoicing app	6,600	$17.58	20/20
free invoice app	6,600	$15.59	19/20
app invoice	6,600	$17.58	18/20
invoices app	6,600	$20.73	18/20
invoice app free	5,400	$14.33	20/20
invoices app free	5,400	$12.3	20/20
invoice free app	5,400	$12.3	19/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/search-volume?q=best-invoice-app" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt