How many companies use Four vs ReadSpeaker?

3,356 companies use Four and 585 companies use ReadSpeaker in our database. Four is more widely adopted with 5.7x more companies than ReadSpeaker.

Can I get a list of companies using both Four and ReadSpeaker?

Yes. AgentData tracks companies using both tools. Sign up free to access the full list with emails, tech stacks, and contacts via CSV or API.

Four is used by 3,356companies — 5.7x more than ReadSpeaker (585).

3,356 use Four585 use ReadSpeaker

	Four	ReadSpeaker
Companies	3,356	585
Category	Payment	Widgets

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3,941 companies with emails, tech stacks, and contacts

1,000 lookups · API access · CSV exports

API access

GET /api/v1/tech?name=four

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