Apollo vs Cal.com

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Apollo is the stronger AI pick in Sales Engagement: it has a visibility score of 51 versus 6.8 for Cal.com, and ranks ahead in 100% of the answers that name both.

Choose Apollo if…

You want the brand AI engines rank higher (51 vs 6.8)
You need more native integrations (200+ vs 100+)
You need SOC 2 or ISO/IEC 27001 or CASA Tier 2 or CPRA or EU-US DPF or PCI DSS coverage
You prefer a larger, established vendor (501–1,000 employees)

Choose Cal.com if…

You need ISO 27001 or SOC 2 Type II or HIPAA coverage

AI visibility side by side

Latest weekly run · Nov 3

Metric	Apollo	Cal.com
Visibility score	51%	6.8%
Change vs last week	down−2.8%	New
Rank in Sales Engagement	#4	#16
Share of voice	9.4%	2.3%
Mentions this run	59	17
Positive in AI answers	60%	—

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Apollo −2.799999999999997pp · Cal.com +6.8pp over 1 weekly runs.

Engine by engine

Apollo leads on 3 of 3 engines

ChatGPT

70.6%

AI Mode

39.1%

1.7%

Perplexity

43.3%

18.7%

ApolloCal.com

Head to head in AI answers

11 engine answers name both brands

11Apollo ranked higher

0Cal.com ranked higher

Prompt	Engine	Apollo	Cal.com
How do I choose a sales engagement platform for a mid-market team?	Perplexity	#3	#9
What are the best Sales Engagement tools in 2026?	Perplexity	#3	#15
Top sales engagement platform options for B2B SaaS companies	Perplexity	#3	#13
Which sales engagement platform has the best reviews?	Perplexity	#3	#8
Compare the leading Sales Engagement platforms	Perplexity	#5	#15
Alternatives to the most popular sales engagement platform	Perplexity	#3	#16
Most affordable sales engagement platform that is still reliable	Perplexity	#1	#7
Is there a free sales engagement platform for small teams?	Perplexity	#1	#6
Which sales engagement platform has transparent pricing?	Perplexity	#1	#9
Official website of the top sales engagement platform vendors	Perplexity	#6	#17
Where can I sign up for a sales engagement platform?	Perplexity	#1	#5

Features, pricing & fit

Dimension	Apollo	Cal.com
Pricing model	Per seat	Per seat
Entry price	Contact sales	Free; paid from $12 per seat / mo
Free plan	Yes	Yes
Deployment	Cloud platform	Hosted cloud service, with a self-hosting option and US or EU data hosting on enterprise plans
Integrations	200+	100+
Compliance	GDPR, SOC 2, CCPA, ISO/IEC 27001, CASA Tier 2, CPRA, EU-US DPF, PCI DSS	ISO 27001, SOC 2 Type II, HIPAA, GDPR, CCPA
Support	Email support at support@apollo.io, Dedicated support on Custom plans, Sales team for Custom plan discussions	Help docs at cal.com/help, Email support@cal.com, Priority Slack and account support on Enterprise plan
Founded	2015	2021
Headquarters	San Francisco, CA	San Francisco, California, United States
Employees	501–1,000	11–50
Funding	Series D · $250M raised	Early Stage VC · $32M raised
Best for	Sales and go-to-market teams that run prospecting, outreach and dialing and want data, AI and execution in one system	Individuals, sales and success teams, healthcare providers and product teams that need booking pages or scheduling embedded in their own products